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User-configurable physical MTU for individual links

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This patch allows users to specify the physical layer MTU for individual links
when in multipath mode. For example:

{
  "settings":
  {
    "defaultBondingPolicy": "custom-balance-xor",
    "policies":
    {
      "custom-balance-xor":
      {
        "basePolicy": "balance-xor",
        "failoverInterval": 5000,
        "links": {
          "weird_5g_link": { "mtu": 1300 },
          "enp5s0": { "mtu": 1400  }
        }
      }
    }
  }
}
This commit is contained in:
Joseph Henry 2023-01-11 20:12:15 -08:00 • committed by Sean OMeara
parent eccc31a4b9
commit 39f3f5b2d9
6 changed files with 36 additions and 7 deletions
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8
node/Path.hpp
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@ -92,6 +92,7 @@ public:
_valid(true),
_eligible(false),
_bonded(false),
_mtu(0),
_givenLinkSpeed(0),
_relativeQuality(0),
_latency(0xffff),
@ -112,6 +113,7 @@ public:
_valid(true),
_eligible(false),
_bonded(false),
_mtu(0),
_givenLinkSpeed(0),
_relativeQuality(0),
_latency(0xffff),
@ -334,6 +336,11 @@ public:
*/
inline unsigned int bonded() const { return _bonded; }
/**
* @return Whether the user-specified MTU for this path (determined by MTU for parent link)
*/
inline unsigned int mtu() const { return _mtu; }
/**
* @return Given link capacity as reported by the bonding layer
*/
@ -370,6 +377,7 @@ private:
volatile bool _valid;
volatile bool _eligible;
volatile bool _bonded;
volatile uint16_t _mtu;
volatile uint32_t _givenLinkSpeed;
volatile float _relativeQuality;