Question about default route setup #240

Open
Open
Question about default route setup#240

Description

@freak82
freak82
opened on Jan 31, 2020

Hi there,

I'm researching the capabilities of the OpenFastPath stack.
I hit a problem where my packets get dropped and found that my rule for default route doesn't work.
The packets get dropped because ofp_get_next_hop can't find next hop when processing output packets.
I'm able to reproduce and show my problem with the following simplified snippet:

 struct ofp_route_msg rtpars = {
.type = OFP_ROUTE_ADD, .flags = OFP_RTF_GATEWAY,
.dst = 0x00000000, .masklen = 0, .gw = 0x011E140A, // 10.20.30.1 .port = 0, .vlan = 0, .vrf = 0, .dst6 = {}, .gw6 = {}}; ofp_set_route_msg(&rtpars); usleep(1'000'000); ofp_show_routes(STDOUT_FILENO, OFP_SHOW_ROUTES); uint32_t flags = 0; uint32_t addr = 0x051E140A; // 10.20.30.5 printf("Next hop %p for %s\n", ofp_get_next_hop(rtpars.vrf, addr, &flags), ofp_print_ip_addr(addr));

This code prints:

Destination Gateway Iface Flags
VRF: 0
0.0.0.0/0 10.20.30.1 fp0 net gateway
Next hop (nil) for 10.20.30.5 <----- Next hop is not found for this ip address

And just to make sure that the above snippet actually works. If I do this change in the above code

 .dst = 0x001E140A, // 10.20.30.0 .masklen = 24,

then the code prints:

Destination Gateway Iface Flags
VRF: 0
10.20.30.0/24 10.20.30.1 fp0 net gateway
Next hop 0x7f5e106e936c for 10.20.30.5 <----- Next hop is found

So, my question is: What I'm doing wrong and how can I setup default route for all packets?

Thanks,
Pavel.

Activity

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

No one assigned

    Labels

    No labels
    No labels

    Type

    No type

    Projects

    No projects

      Milestone

      No milestone

      Relationships

      None yet

      Development

      No branches or pull requests

      Issue actions

      , '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" + '

      Skip to content
      Question about default route setup #240
      Open
      Open
      Question about default route setup#240
      Description
      @freak82
      freak82
      opened on Jan 31, 2020
      Hi there,
      I'm researching the capabilities of the OpenFastPath stack.
      
I hit a problem where my packets get dropped and found that my rule for default route doesn't work.
      
The packets get dropped because ofp_get_next_hop can't find next hop when processing output packets.
      
I'm able to reproduce and show my problem with the following simplified snippet:
       struct ofp_route_msg rtpars = {
.type = OFP_ROUTE_ADD, .flags = OFP_RTF_GATEWAY,
.dst = 0x00000000, .masklen = 0, .gw = 0x011E140A, // 10.20.30.1 .port = 0, .vlan = 0, .vrf = 0, .dst6 = {}, .gw6 = {}}; ofp_set_route_msg(&rtpars); usleep(1'000'000); ofp_show_routes(STDOUT_FILENO, OFP_SHOW_ROUTES); uint32_t flags = 0; uint32_t addr = 0x051E140A; // 10.20.30.5 printf("Next hop %p for %s\n", ofp_get_next_hop(rtpars.vrf, addr, &flags), ofp_print_ip_addr(addr));

      This code prints:
      Destination Gateway Iface Flags
VRF: 0
0.0.0.0/0 10.20.30.1 fp0 net gateway
Next hop (nil) for 10.20.30.5 <----- Next hop is not found for this ip address

      And just to make sure that the above snippet actually works. If I do this change in the above code
       .dst = 0x001E140A, // 10.20.30.0 .masklen = 24,

      then the code prints:
      Destination Gateway Iface Flags
VRF: 0
10.20.30.0/24 10.20.30.1 fp0 net gateway
Next hop 0x7f5e106e936c for 10.20.30.5 <----- Next hop is found

      So, my question is: What I'm doing wrong and how can I setup default route for all packets?
      Thanks,
      
Pavel.
      Activity
      Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
      Metadata
      Metadata
      Assignees
      No one assigned
        Labels
        No labels
        No labels
        Type
        No type
        Projects
        No projects
          Milestone
          No milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
, '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
          Question about default route setup #240
          Open
          Open
          Question about default route setup#240
          Description
          @freak82
          freak82
          opened on Jan 31, 2020
          Hi there,
          I'm researching the capabilities of the OpenFastPath stack.
          
I hit a problem where my packets get dropped and found that my rule for default route doesn't work.
          
The packets get dropped because ofp_get_next_hop can't find next hop when processing output packets.
          
I'm able to reproduce and show my problem with the following simplified snippet:
           struct ofp_route_msg rtpars = {
.type = OFP_ROUTE_ADD, .flags = OFP_RTF_GATEWAY,
.dst = 0x00000000, .masklen = 0, .gw = 0x011E140A, // 10.20.30.1 .port = 0, .vlan = 0, .vrf = 0, .dst6 = {}, .gw6 = {}}; ofp_set_route_msg(&rtpars); usleep(1'000'000); ofp_show_routes(STDOUT_FILENO, OFP_SHOW_ROUTES); uint32_t flags = 0; uint32_t addr = 0x051E140A; // 10.20.30.5 printf("Next hop %p for %s\n", ofp_get_next_hop(rtpars.vrf, addr, &flags), ofp_print_ip_addr(addr));

          This code prints:
          Destination Gateway Iface Flags
VRF: 0
0.0.0.0/0 10.20.30.1 fp0 net gateway
Next hop (nil) for 10.20.30.5 <----- Next hop is not found for this ip address

          And just to make sure that the above snippet actually works. If I do this change in the above code
           .dst = 0x001E140A, // 10.20.30.0 .masklen = 24,

          then the code prints:
          Destination Gateway Iface Flags
VRF: 0
10.20.30.0/24 10.20.30.1 fp0 net gateway
Next hop 0x7f5e106e936c for 10.20.30.5 <----- Next hop is found

          So, my question is: What I'm doing wrong and how can I setup default route for all packets?
          Thanks,
          
Pavel.
          Activity
          Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
          Metadata
          Metadata
          Assignees
          No one assigned
            Labels
            No labels
            No labels
            Type
            No type
            Projects
            No projects
              Milestone
              No milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, '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('^' + ".*" + '

              Skip to content
              Question about default route setup #240
              Open
              Open
              Question about default route setup#240
              Description
              @freak82
              freak82
              opened on Jan 31, 2020
              Hi there,
              I'm researching the capabilities of the OpenFastPath stack.
              
I hit a problem where my packets get dropped and found that my rule for default route doesn't work.
              
The packets get dropped because ofp_get_next_hop can't find next hop when processing output packets.
              
I'm able to reproduce and show my problem with the following simplified snippet:
               struct ofp_route_msg rtpars = {
.type = OFP_ROUTE_ADD, .flags = OFP_RTF_GATEWAY,
.dst = 0x00000000, .masklen = 0, .gw = 0x011E140A, // 10.20.30.1 .port = 0, .vlan = 0, .vrf = 0, .dst6 = {}, .gw6 = {}}; ofp_set_route_msg(&rtpars); usleep(1'000'000); ofp_show_routes(STDOUT_FILENO, OFP_SHOW_ROUTES); uint32_t flags = 0; uint32_t addr = 0x051E140A; // 10.20.30.5 printf("Next hop %p for %s\n", ofp_get_next_hop(rtpars.vrf, addr, &flags), ofp_print_ip_addr(addr));

              This code prints:
              Destination Gateway Iface Flags
VRF: 0
0.0.0.0/0 10.20.30.1 fp0 net gateway
Next hop (nil) for 10.20.30.5 <----- Next hop is not found for this ip address

              And just to make sure that the above snippet actually works. If I do this change in the above code
               .dst = 0x001E140A, // 10.20.30.0 .masklen = 24,

              then the code prints:
              Destination Gateway Iface Flags
VRF: 0
10.20.30.0/24 10.20.30.1 fp0 net gateway
Next hop 0x7f5e106e936c for 10.20.30.5 <----- Next hop is found

              So, my question is: What I'm doing wrong and how can I setup default route for all packets?
              Thanks,
              
Pavel.
              Activity
              Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
                No labels
                No labels
                Type
                No type
                Projects
                No projects
                  Milestone
                  No milestone
                  Relationships
                  None yet
                  Development
                  No branches or pull requests
                  Issue actions
                  
, '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
                  Question about default route setup #240
                  Open
                  Open
                  Question about default route setup#240
                  Description
                  @freak82
                  freak82
                  opened on Jan 31, 2020
                  Hi there,
                  I'm researching the capabilities of the OpenFastPath stack.
                  
I hit a problem where my packets get dropped and found that my rule for default route doesn't work.
                  
The packets get dropped because ofp_get_next_hop can't find next hop when processing output packets.
                  
I'm able to reproduce and show my problem with the following simplified snippet:
                   struct ofp_route_msg rtpars = {
.type = OFP_ROUTE_ADD, .flags = OFP_RTF_GATEWAY,
.dst = 0x00000000, .masklen = 0, .gw = 0x011E140A, // 10.20.30.1 .port = 0, .vlan = 0, .vrf = 0, .dst6 = {}, .gw6 = {}}; ofp_set_route_msg(&rtpars); usleep(1'000'000); ofp_show_routes(STDOUT_FILENO, OFP_SHOW_ROUTES); uint32_t flags = 0; uint32_t addr = 0x051E140A; // 10.20.30.5 printf("Next hop %p for %s\n", ofp_get_next_hop(rtpars.vrf, addr, &flags), ofp_print_ip_addr(addr));

                  This code prints:
                  Destination Gateway Iface Flags
VRF: 0
0.0.0.0/0 10.20.30.1 fp0 net gateway
Next hop (nil) for 10.20.30.5 <----- Next hop is not found for this ip address

                  And just to make sure that the above snippet actually works. If I do this change in the above code
                   .dst = 0x001E140A, // 10.20.30.0 .masklen = 24,

                  then the code prints:
                  Destination Gateway Iface Flags
VRF: 0
10.20.30.0/24 10.20.30.1 fp0 net gateway
Next hop 0x7f5e106e936c for 10.20.30.5 <----- Next hop is found

                  So, my question is: What I'm doing wrong and how can I setup default route for all packets?
                  Thanks,
                  
Pavel.
                  Activity
                  Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    No labels
                    No labels
                    Type
                    No type
                    Projects
                    No projects
                      Milestone
                      No milestone
                      Relationships
                      None yet
                      Development
                      No branches or pull requests
                      Issue actions
                      
, '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
                      Question about default route setup #240
                      Open
                      Open
                      Question about default route setup#240
                      Description
                      @freak82
                      freak82
                      opened on Jan 31, 2020
                      Hi there,
                      I'm researching the capabilities of the OpenFastPath stack.
                      
I hit a problem where my packets get dropped and found that my rule for default route doesn't work.
                      
The packets get dropped because ofp_get_next_hop can't find next hop when processing output packets.
                      
I'm able to reproduce and show my problem with the following simplified snippet:
                       struct ofp_route_msg rtpars = {
.type = OFP_ROUTE_ADD, .flags = OFP_RTF_GATEWAY,
.dst = 0x00000000, .masklen = 0, .gw = 0x011E140A, // 10.20.30.1 .port = 0, .vlan = 0, .vrf = 0, .dst6 = {}, .gw6 = {}}; ofp_set_route_msg(&rtpars); usleep(1'000'000); ofp_show_routes(STDOUT_FILENO, OFP_SHOW_ROUTES); uint32_t flags = 0; uint32_t addr = 0x051E140A; // 10.20.30.5 printf("Next hop %p for %s\n", ofp_get_next_hop(rtpars.vrf, addr, &flags), ofp_print_ip_addr(addr));

                      This code prints:
                      Destination Gateway Iface Flags
VRF: 0
0.0.0.0/0 10.20.30.1 fp0 net gateway
Next hop (nil) for 10.20.30.5 <----- Next hop is not found for this ip address

                      And just to make sure that the above snippet actually works. If I do this change in the above code
                       .dst = 0x001E140A, // 10.20.30.0 .masklen = 24,

                      then the code prints:
                      Destination Gateway Iface Flags
VRF: 0
10.20.30.0/24 10.20.30.1 fp0 net gateway
Next hop 0x7f5e106e936c for 10.20.30.5 <----- Next hop is found

                      So, my question is: What I'm doing wrong and how can I setup default route for all packets?
                      Thanks,
                      
Pavel.
                      Activity
                      Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                      Metadata
                      Metadata
                      Assignees
                      No one assigned
                        Labels
                        No labels
                        No labels
                        Type
                        No type
                        Projects
                        No projects
                          Milestone
                          No milestone
                          Relationships
                          None yet
                          Development
                          No branches or pull requests
                          Issue actions
                          
, '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('^' + ".*" + '

                          Skip to content
                          Question about default route setup #240
                          Open
                          Open
                          Question about default route setup#240
                          Description
                          @freak82
                          freak82
                          opened on Jan 31, 2020
                          Hi there,
                          I'm researching the capabilities of the OpenFastPath stack.
                          
I hit a problem where my packets get dropped and found that my rule for default route doesn't work.
                          
The packets get dropped because ofp_get_next_hop can't find next hop when processing output packets.
                          
I'm able to reproduce and show my problem with the following simplified snippet:
                           struct ofp_route_msg rtpars = {
.type = OFP_ROUTE_ADD, .flags = OFP_RTF_GATEWAY,
.dst = 0x00000000, .masklen = 0, .gw = 0x011E140A, // 10.20.30.1 .port = 0, .vlan = 0, .vrf = 0, .dst6 = {}, .gw6 = {}}; ofp_set_route_msg(&rtpars); usleep(1'000'000); ofp_show_routes(STDOUT_FILENO, OFP_SHOW_ROUTES); uint32_t flags = 0; uint32_t addr = 0x051E140A; // 10.20.30.5 printf("Next hop %p for %s\n", ofp_get_next_hop(rtpars.vrf, addr, &flags), ofp_print_ip_addr(addr));

                          This code prints:
                          Destination Gateway Iface Flags
VRF: 0
0.0.0.0/0 10.20.30.1 fp0 net gateway
Next hop (nil) for 10.20.30.5 <----- Next hop is not found for this ip address

                          And just to make sure that the above snippet actually works. If I do this change in the above code
                           .dst = 0x001E140A, // 10.20.30.0 .masklen = 24,

                          then the code prints:
                          Destination Gateway Iface Flags
VRF: 0
10.20.30.0/24 10.20.30.1 fp0 net gateway
Next hop 0x7f5e106e936c for 10.20.30.5 <----- Next hop is found

                          So, my question is: What I'm doing wrong and how can I setup default route for all packets?
                          Thanks,
                          
Pavel.
                          Activity
                          Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                          Metadata
                          Metadata
                          Assignees
                          No one assigned
                            Labels
                            No labels
                            No labels
                            Type
                            No type
                            Projects
                            No projects
                              Milestone
                              No milestone
                              Relationships
                              None yet
                              Development
                              No branches or pull requests
                              Issue actions
                              
, '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
                              Question about default route setup #240
                              Open
                              Open
                              Question about default route setup#240
                              Description
                              @freak82
                              freak82
                              opened on Jan 31, 2020
                              Hi there,
                              I'm researching the capabilities of the OpenFastPath stack.
                              
I hit a problem where my packets get dropped and found that my rule for default route doesn't work.
                              
The packets get dropped because ofp_get_next_hop can't find next hop when processing output packets.
                              
I'm able to reproduce and show my problem with the following simplified snippet:
                               struct ofp_route_msg rtpars = {
.type = OFP_ROUTE_ADD, .flags = OFP_RTF_GATEWAY,
.dst = 0x00000000, .masklen = 0, .gw = 0x011E140A, // 10.20.30.1 .port = 0, .vlan = 0, .vrf = 0, .dst6 = {}, .gw6 = {}}; ofp_set_route_msg(&rtpars); usleep(1'000'000); ofp_show_routes(STDOUT_FILENO, OFP_SHOW_ROUTES); uint32_t flags = 0; uint32_t addr = 0x051E140A; // 10.20.30.5 printf("Next hop %p for %s\n", ofp_get_next_hop(rtpars.vrf, addr, &flags), ofp_print_ip_addr(addr));

                              This code prints:
                              Destination Gateway Iface Flags
VRF: 0
0.0.0.0/0 10.20.30.1 fp0 net gateway
Next hop (nil) for 10.20.30.5 <----- Next hop is not found for this ip address

                              And just to make sure that the above snippet actually works. If I do this change in the above code
                               .dst = 0x001E140A, // 10.20.30.0 .masklen = 24,

                              then the code prints:
                              Destination Gateway Iface Flags
VRF: 0
10.20.30.0/24 10.20.30.1 fp0 net gateway
Next hop 0x7f5e106e936c for 10.20.30.5 <----- Next hop is found

                              So, my question is: What I'm doing wrong and how can I setup default route for all packets?
                              Thanks,
                              
Pavel.
                              Activity
                              Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                              Metadata
                              Metadata
                              Assignees
                              No one assigned
                                Labels
                                No labels
                                No labels
                                Type
                                No type
                                Projects
                                No projects
                                  Milestone
                                  No milestone
                                  Relationships
                                  None yet
                                  Development
                                  No branches or pull requests
                                  Issue actions