Format MAC/IP addresses, TCP flags, ICMP types - #259

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trey/formatters
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Format MAC/IP addresses, TCP flags, ICMP types#259
taspelund wants to merge 3 commits into
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trey/formatters

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@taspelundtaspelund commented Jun 17, 2026

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Adds formatters to make life easier when using DTrace to track softnpu.

Before:

ipv4: version 4 ihl 5 diffserv 0 total_len 34 identification 15 flags 2 frag_offset 0 ttl 40 protocol 6 hdr_checksum e444 src c6336502 dst c6336501

After:

ethernet: dst 33:33:00:00:00:dd src a8:40:25:00:00:06 ether_type 0x0901 (Sidecar)
sidecar: sc_code 1 sc_ingress 3 sc_egress 3 sc_ether_type 0x86dd (IPv6) sc_payload 1701d
arp: ∅
ipv4: ∅
ipv6: version 6 traffic_class 0 flow_label 0 payload_len e next_hdr 0x11 (UDP) hop_limit 1 src fe80::aa40:25ff:fe00:6 dst ff02::dd

@taspelundtaspelund self-assigned this Jun 17, 2026
@taspelund
Format MAC/IP addresses, TCP flags, ICMP types
8af3601
Adds formatters to make life easier when using DTrace to track softnpu.
Before:
```
ipv4: version 4 ihl 5 diffserv 0 total_len 34 identification 15 flags 2 frag_offset 0 ttl 40 protocol 6 hdr_checksum e444 src c6336502 dst c6336501 ```
After:
```
ethernet: dst 33:33:00:00:00:dd src a8:40:25:00:00:06 ether_type 0x0901 (Sidecar)
sidecar: sc_code 1 sc_ingress 3 sc_egress 3 sc_ether_type 0x86dd (IPv6) sc_payload 1701d
arp: ∅
ipv4: ∅
ipv6: version 6 traffic_class 0 flow_label 0 payload_len e next_hdr 0x11 (UDP) hop_limit 1 src fe80::aa40:25ff:fe00:6 dst ff02::dd
```
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
@taspelund
cargo fmt
daf8e3a
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
@taspelund
clippy make happy
7607830
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
rcgoodfellow
rcgoodfellow reviewed Jun 19, 2026
View reviewed changes
Comment threadcodegen/rust/src/header.rs
checksum_statements.push(quote! {
csum = p4rs::bitmath::add_le(csum.clone(), self.#name.csum())
});
let dump_call = if size == 32

@rcgoodfellowrcgoodfellowJun 19, 2026

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I think the way we want to do this is either through a) attributes or b) typefs where the display format is implied by some set of types known to the compiler and could be included with x4c. I think both of these would require some additional compiler support, and it seems like (a) would be a better path than (b).

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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Format MAC/IP addresses, TCP flags, ICMP types - #259
Open
taspelund wants to merge 3 commits into
mainfrom 
trey/formatters
Open
Format MAC/IP addresses, TCP flags, ICMP types#259
taspelund wants to merge 3 commits into
mainfrom 
trey/formatters
Conversation
@taspelund
@taspelundtaspelund
commented
Jun 17, 2026

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Adds formatters to make life easier when using DTrace to track softnpu.
Before:
ipv4: version 4 ihl 5 diffserv 0 total_len 34 identification 15 flags 2 frag_offset 0 ttl 40 protocol 6 hdr_checksum e444 src c6336502 dst c6336501 
After:
ethernet: dst 33:33:00:00:00:dd src a8:40:25:00:00:06 ether_type 0x0901 (Sidecar)
sidecar: sc_code 1 sc_ingress 3 sc_egress 3 sc_ether_type 0x86dd (IPv6) sc_payload 1701d
arp: ∅
ipv4: ∅
ipv6: version 6 traffic_class 0 flow_label 0 payload_len e next_hdr 0x11 (UDP) hop_limit 1 src fe80::aa40:25ff:fe00:6 dst ff02::dd

@taspelundtaspelund
self-assigned this
Jun 17, 2026
@taspelund
Format MAC/IP addresses, TCP flags, ICMP types
8af3601
Adds formatters to make life easier when using DTrace to track softnpu.
Before:
```
ipv4: version 4 ihl 5 diffserv 0 total_len 34 identification 15 flags 2 frag_offset 0 ttl 40 protocol 6 hdr_checksum e444 src c6336502 dst c6336501 ```
After:
```
ethernet: dst 33:33:00:00:00:dd src a8:40:25:00:00:06 ether_type 0x0901 (Sidecar)
sidecar: sc_code 1 sc_ingress 3 sc_egress 3 sc_ether_type 0x86dd (IPv6) sc_payload 1701d
arp: ∅
ipv4: ∅
ipv6: version 6 traffic_class 0 flow_label 0 payload_len e next_hdr 0x11 (UDP) hop_limit 1 src fe80::aa40:25ff:fe00:6 dst ff02::dd
```
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
@taspelund
cargo fmt
daf8e3a
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
@taspelund
clippy make happy
7607830
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
rcgoodfellow
rcgoodfellow
reviewed
Jun 19, 2026
View reviewed changes
Comment threadcodegen/rust/src/header.rs
 checksum_statements.push(quote! {
 csum = p4rs::bitmath::add_le(csum.clone(), self.#name.csum())
 });
 let dump_call = if size == 32
@rcgoodfellowrcgoodfellowJun 19, 2026

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I think the way we want to do this is either through a) attributes or b) typefs where the display format is implied by some set of types known to the compiler and could be included with x4c. I think both of these would require some additional compiler support, and it seems like (a) would be a better path than (b).
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@taspelund@rcgoodfellow

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Format MAC/IP addresses, TCP flags, ICMP types - #259
Open
taspelund wants to merge 3 commits into
mainfrom 
trey/formatters
Open
Format MAC/IP addresses, TCP flags, ICMP types#259
taspelund wants to merge 3 commits into
mainfrom 
trey/formatters
Conversation
@taspelund
@taspelundtaspelund
commented
Jun 17, 2026

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Adds formatters to make life easier when using DTrace to track softnpu.
Before:
ipv4: version 4 ihl 5 diffserv 0 total_len 34 identification 15 flags 2 frag_offset 0 ttl 40 protocol 6 hdr_checksum e444 src c6336502 dst c6336501 
After:
ethernet: dst 33:33:00:00:00:dd src a8:40:25:00:00:06 ether_type 0x0901 (Sidecar)
sidecar: sc_code 1 sc_ingress 3 sc_egress 3 sc_ether_type 0x86dd (IPv6) sc_payload 1701d
arp: ∅
ipv4: ∅
ipv6: version 6 traffic_class 0 flow_label 0 payload_len e next_hdr 0x11 (UDP) hop_limit 1 src fe80::aa40:25ff:fe00:6 dst ff02::dd

@taspelundtaspelund
self-assigned this
Jun 17, 2026
@taspelund
Format MAC/IP addresses, TCP flags, ICMP types
8af3601
Adds formatters to make life easier when using DTrace to track softnpu.
Before:
```
ipv4: version 4 ihl 5 diffserv 0 total_len 34 identification 15 flags 2 frag_offset 0 ttl 40 protocol 6 hdr_checksum e444 src c6336502 dst c6336501 ```
After:
```
ethernet: dst 33:33:00:00:00:dd src a8:40:25:00:00:06 ether_type 0x0901 (Sidecar)
sidecar: sc_code 1 sc_ingress 3 sc_egress 3 sc_ether_type 0x86dd (IPv6) sc_payload 1701d
arp: ∅
ipv4: ∅
ipv6: version 6 traffic_class 0 flow_label 0 payload_len e next_hdr 0x11 (UDP) hop_limit 1 src fe80::aa40:25ff:fe00:6 dst ff02::dd
```
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
@taspelund
cargo fmt
daf8e3a
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
@taspelund
clippy make happy
7607830
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
rcgoodfellow
rcgoodfellow
reviewed
Jun 19, 2026
View reviewed changes
Comment threadcodegen/rust/src/header.rs
 checksum_statements.push(quote! {
 csum = p4rs::bitmath::add_le(csum.clone(), self.#name.csum())
 });
 let dump_call = if size == 32
@rcgoodfellowrcgoodfellowJun 19, 2026

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I think the way we want to do this is either through a) attributes or b) typefs where the display format is implied by some set of types known to the compiler and could be included with x4c. I think both of these would require some additional compiler support, and it seems like (a) would be a better path than (b).
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2 participants

@taspelund@rcgoodfellow

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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Format MAC/IP addresses, TCP flags, ICMP types - #259
Open
taspelund wants to merge 3 commits into
mainfrom 
trey/formatters
Open
Format MAC/IP addresses, TCP flags, ICMP types#259
taspelund wants to merge 3 commits into
mainfrom 
trey/formatters
Conversation
@taspelund
@taspelundtaspelund
commented
Jun 17, 2026

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Adds formatters to make life easier when using DTrace to track softnpu.
Before:
ipv4: version 4 ihl 5 diffserv 0 total_len 34 identification 15 flags 2 frag_offset 0 ttl 40 protocol 6 hdr_checksum e444 src c6336502 dst c6336501 
After:
ethernet: dst 33:33:00:00:00:dd src a8:40:25:00:00:06 ether_type 0x0901 (Sidecar)
sidecar: sc_code 1 sc_ingress 3 sc_egress 3 sc_ether_type 0x86dd (IPv6) sc_payload 1701d
arp: ∅
ipv4: ∅
ipv6: version 6 traffic_class 0 flow_label 0 payload_len e next_hdr 0x11 (UDP) hop_limit 1 src fe80::aa40:25ff:fe00:6 dst ff02::dd

@taspelundtaspelund
self-assigned this
Jun 17, 2026
@taspelund
Format MAC/IP addresses, TCP flags, ICMP types
8af3601
Adds formatters to make life easier when using DTrace to track softnpu.
Before:
```
ipv4: version 4 ihl 5 diffserv 0 total_len 34 identification 15 flags 2 frag_offset 0 ttl 40 protocol 6 hdr_checksum e444 src c6336502 dst c6336501 ```
After:
```
ethernet: dst 33:33:00:00:00:dd src a8:40:25:00:00:06 ether_type 0x0901 (Sidecar)
sidecar: sc_code 1 sc_ingress 3 sc_egress 3 sc_ether_type 0x86dd (IPv6) sc_payload 1701d
arp: ∅
ipv4: ∅
ipv6: version 6 traffic_class 0 flow_label 0 payload_len e next_hdr 0x11 (UDP) hop_limit 1 src fe80::aa40:25ff:fe00:6 dst ff02::dd
```
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
@taspelund
cargo fmt
daf8e3a
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
@taspelund
clippy make happy
7607830
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
rcgoodfellow
rcgoodfellow
reviewed
Jun 19, 2026
View reviewed changes
Comment threadcodegen/rust/src/header.rs
 checksum_statements.push(quote! {
 csum = p4rs::bitmath::add_le(csum.clone(), self.#name.csum())
 });
 let dump_call = if size == 32
@rcgoodfellowrcgoodfellowJun 19, 2026

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I think the way we want to do this is either through a) attributes or b) typefs where the display format is implied by some set of types known to the compiler and could be included with x4c. I think both of these would require some additional compiler support, and it seems like (a) would be a better path than (b).
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@taspelund@rcgoodfellow

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
Format MAC/IP addresses, TCP flags, ICMP types - #259
Open
taspelund wants to merge 3 commits into
mainfrom 
trey/formatters
Open
Format MAC/IP addresses, TCP flags, ICMP types#259
taspelund wants to merge 3 commits into
mainfrom 
trey/formatters
Conversation
@taspelund
@taspelundtaspelund
commented
Jun 17, 2026

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Adds formatters to make life easier when using DTrace to track softnpu.
Before:
ipv4: version 4 ihl 5 diffserv 0 total_len 34 identification 15 flags 2 frag_offset 0 ttl 40 protocol 6 hdr_checksum e444 src c6336502 dst c6336501 
After:
ethernet: dst 33:33:00:00:00:dd src a8:40:25:00:00:06 ether_type 0x0901 (Sidecar)
sidecar: sc_code 1 sc_ingress 3 sc_egress 3 sc_ether_type 0x86dd (IPv6) sc_payload 1701d
arp: ∅
ipv4: ∅
ipv6: version 6 traffic_class 0 flow_label 0 payload_len e next_hdr 0x11 (UDP) hop_limit 1 src fe80::aa40:25ff:fe00:6 dst ff02::dd

@taspelundtaspelund
self-assigned this
Jun 17, 2026
@taspelund
Format MAC/IP addresses, TCP flags, ICMP types
8af3601
Adds formatters to make life easier when using DTrace to track softnpu.
Before:
```
ipv4: version 4 ihl 5 diffserv 0 total_len 34 identification 15 flags 2 frag_offset 0 ttl 40 protocol 6 hdr_checksum e444 src c6336502 dst c6336501 ```
After:
```
ethernet: dst 33:33:00:00:00:dd src a8:40:25:00:00:06 ether_type 0x0901 (Sidecar)
sidecar: sc_code 1 sc_ingress 3 sc_egress 3 sc_ether_type 0x86dd (IPv6) sc_payload 1701d
arp: ∅
ipv4: ∅
ipv6: version 6 traffic_class 0 flow_label 0 payload_len e next_hdr 0x11 (UDP) hop_limit 1 src fe80::aa40:25ff:fe00:6 dst ff02::dd
```
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
@taspelund
cargo fmt
daf8e3a
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
@taspelund
clippy make happy
7607830
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
rcgoodfellow
rcgoodfellow
reviewed
Jun 19, 2026
View reviewed changes
Comment threadcodegen/rust/src/header.rs
 checksum_statements.push(quote! {
 csum = p4rs::bitmath::add_le(csum.clone(), self.#name.csum())
 });
 let dump_call = if size == 32
@rcgoodfellowrcgoodfellowJun 19, 2026

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I think the way we want to do this is either through a) attributes or b) typefs where the display format is implied by some set of types known to the compiler and could be included with x4c. I think both of these would require some additional compiler support, and it seems like (a) would be a better path than (b).
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2 participants

@taspelund@rcgoodfellow

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Format MAC/IP addresses, TCP flags, ICMP types - #259
Open
taspelund wants to merge 3 commits into
mainfrom 
trey/formatters
Open
Format MAC/IP addresses, TCP flags, ICMP types#259
taspelund wants to merge 3 commits into
mainfrom 
trey/formatters
Conversation
@taspelund
@taspelundtaspelund
commented
Jun 17, 2026

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Adds formatters to make life easier when using DTrace to track softnpu.
Before:
ipv4: version 4 ihl 5 diffserv 0 total_len 34 identification 15 flags 2 frag_offset 0 ttl 40 protocol 6 hdr_checksum e444 src c6336502 dst c6336501 
After:
ethernet: dst 33:33:00:00:00:dd src a8:40:25:00:00:06 ether_type 0x0901 (Sidecar)
sidecar: sc_code 1 sc_ingress 3 sc_egress 3 sc_ether_type 0x86dd (IPv6) sc_payload 1701d
arp: ∅
ipv4: ∅
ipv6: version 6 traffic_class 0 flow_label 0 payload_len e next_hdr 0x11 (UDP) hop_limit 1 src fe80::aa40:25ff:fe00:6 dst ff02::dd

@taspelundtaspelund
self-assigned this
Jun 17, 2026
@taspelund
Format MAC/IP addresses, TCP flags, ICMP types
8af3601
Adds formatters to make life easier when using DTrace to track softnpu.
Before:
```
ipv4: version 4 ihl 5 diffserv 0 total_len 34 identification 15 flags 2 frag_offset 0 ttl 40 protocol 6 hdr_checksum e444 src c6336502 dst c6336501 ```
After:
```
ethernet: dst 33:33:00:00:00:dd src a8:40:25:00:00:06 ether_type 0x0901 (Sidecar)
sidecar: sc_code 1 sc_ingress 3 sc_egress 3 sc_ether_type 0x86dd (IPv6) sc_payload 1701d
arp: ∅
ipv4: ∅
ipv6: version 6 traffic_class 0 flow_label 0 payload_len e next_hdr 0x11 (UDP) hop_limit 1 src fe80::aa40:25ff:fe00:6 dst ff02::dd
```
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
@taspelund
cargo fmt
daf8e3a
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
@taspelund
clippy make happy
7607830
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
rcgoodfellow
rcgoodfellow
reviewed
Jun 19, 2026
View reviewed changes
Comment threadcodegen/rust/src/header.rs
 checksum_statements.push(quote! {
 csum = p4rs::bitmath::add_le(csum.clone(), self.#name.csum())
 });
 let dump_call = if size == 32
@rcgoodfellowrcgoodfellowJun 19, 2026

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I think the way we want to do this is either through a) attributes or b) typefs where the display format is implied by some set of types known to the compiler and could be included with x4c. I think both of these would require some additional compiler support, and it seems like (a) would be a better path than (b).
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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Format MAC/IP addresses, TCP flags, ICMP types - #259
Open
taspelund wants to merge 3 commits into
mainfrom 
trey/formatters
Open
Format MAC/IP addresses, TCP flags, ICMP types#259
taspelund wants to merge 3 commits into
mainfrom 
trey/formatters
Conversation
@taspelund
@taspelundtaspelund
commented
Jun 17, 2026

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Adds formatters to make life easier when using DTrace to track softnpu.
Before:
ipv4: version 4 ihl 5 diffserv 0 total_len 34 identification 15 flags 2 frag_offset 0 ttl 40 protocol 6 hdr_checksum e444 src c6336502 dst c6336501 
After:
ethernet: dst 33:33:00:00:00:dd src a8:40:25:00:00:06 ether_type 0x0901 (Sidecar)
sidecar: sc_code 1 sc_ingress 3 sc_egress 3 sc_ether_type 0x86dd (IPv6) sc_payload 1701d
arp: ∅
ipv4: ∅
ipv6: version 6 traffic_class 0 flow_label 0 payload_len e next_hdr 0x11 (UDP) hop_limit 1 src fe80::aa40:25ff:fe00:6 dst ff02::dd

@taspelundtaspelund
self-assigned this
Jun 17, 2026
@taspelund
Format MAC/IP addresses, TCP flags, ICMP types
8af3601
Adds formatters to make life easier when using DTrace to track softnpu.
Before:
```
ipv4: version 4 ihl 5 diffserv 0 total_len 34 identification 15 flags 2 frag_offset 0 ttl 40 protocol 6 hdr_checksum e444 src c6336502 dst c6336501 ```
After:
```
ethernet: dst 33:33:00:00:00:dd src a8:40:25:00:00:06 ether_type 0x0901 (Sidecar)
sidecar: sc_code 1 sc_ingress 3 sc_egress 3 sc_ether_type 0x86dd (IPv6) sc_payload 1701d
arp: ∅
ipv4: ∅
ipv6: version 6 traffic_class 0 flow_label 0 payload_len e next_hdr 0x11 (UDP) hop_limit 1 src fe80::aa40:25ff:fe00:6 dst ff02::dd
```
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
@taspelund
cargo fmt
daf8e3a
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
@taspelund
clippy make happy
7607830
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
rcgoodfellow
rcgoodfellow
reviewed
Jun 19, 2026
View reviewed changes
Comment threadcodegen/rust/src/header.rs
 checksum_statements.push(quote! {
 csum = p4rs::bitmath::add_le(csum.clone(), self.#name.csum())
 });
 let dump_call = if size == 32
@rcgoodfellowrcgoodfellowJun 19, 2026

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I think the way we want to do this is either through a) attributes or b) typefs where the display format is implied by some set of types known to the compiler and could be included with x4c. I think both of these would require some additional compiler support, and it seems like (a) would be a better path than (b).
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@rcgoodfellowrcgoodfellowrcgoodfellow left review comments

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2 participants

@taspelund@rcgoodfellow

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
Format MAC/IP addresses, TCP flags, ICMP types - #259
Open
taspelund wants to merge 3 commits into
mainfrom 
trey/formatters
Open
Format MAC/IP addresses, TCP flags, ICMP types#259
taspelund wants to merge 3 commits into
mainfrom 
trey/formatters
Conversation
@taspelund
@taspelundtaspelund
commented
Jun 17, 2026

Copy link


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Adds formatters to make life easier when using DTrace to track softnpu.
Before:
ipv4: version 4 ihl 5 diffserv 0 total_len 34 identification 15 flags 2 frag_offset 0 ttl 40 protocol 6 hdr_checksum e444 src c6336502 dst c6336501 
After:
ethernet: dst 33:33:00:00:00:dd src a8:40:25:00:00:06 ether_type 0x0901 (Sidecar)
sidecar: sc_code 1 sc_ingress 3 sc_egress 3 sc_ether_type 0x86dd (IPv6) sc_payload 1701d
arp: ∅
ipv4: ∅
ipv6: version 6 traffic_class 0 flow_label 0 payload_len e next_hdr 0x11 (UDP) hop_limit 1 src fe80::aa40:25ff:fe00:6 dst ff02::dd

@taspelundtaspelund
self-assigned this
Jun 17, 2026
@taspelund
Format MAC/IP addresses, TCP flags, ICMP types
8af3601
Adds formatters to make life easier when using DTrace to track softnpu.
Before:
```
ipv4: version 4 ihl 5 diffserv 0 total_len 34 identification 15 flags 2 frag_offset 0 ttl 40 protocol 6 hdr_checksum e444 src c6336502 dst c6336501 ```
After:
```
ethernet: dst 33:33:00:00:00:dd src a8:40:25:00:00:06 ether_type 0x0901 (Sidecar)
sidecar: sc_code 1 sc_ingress 3 sc_egress 3 sc_ether_type 0x86dd (IPv6) sc_payload 1701d
arp: ∅
ipv4: ∅
ipv6: version 6 traffic_class 0 flow_label 0 payload_len e next_hdr 0x11 (UDP) hop_limit 1 src fe80::aa40:25ff:fe00:6 dst ff02::dd
```
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
@taspelund
cargo fmt
daf8e3a
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
@taspelund
clippy make happy
7607830
Signed-off-by: Trey Aspelund <trey@oxidecomputer.com>
rcgoodfellow
rcgoodfellow
reviewed
Jun 19, 2026
View reviewed changes
Comment threadcodegen/rust/src/header.rs
 checksum_statements.push(quote! {
 csum = p4rs::bitmath::add_le(csum.clone(), self.#name.csum())
 });
 let dump_call = if size == 32
@rcgoodfellowrcgoodfellowJun 19, 2026

Copy link


Copy Markdown

Collaborator
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I think the way we want to do this is either through a) attributes or b) typefs where the display format is implied by some set of types known to the compiler and could be included with x4c. I think both of these would require some additional compiler support, and it seems like (a) would be a better path than (b).
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@rcgoodfellowrcgoodfellowrcgoodfellow left review comments

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2 participants

@taspelund@rcgoodfellow