git: d6963b9ed328 - main - if_vxlan(4): Exclude ETHER_CRC_LEN from macro VXLAN_MAX_MTU
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Date: Tue, 02 Jul 2024 04:58:16 UTC
The branch main has been updated by zlei:
URL: https://cgit.FreeBSD.org/src/commit/?id=d6963b9ed3287e91db3d1df153861591faff0007
commit d6963b9ed3287e91db3d1df153861591faff0007
Author: Zhenlei Huang <zlei@FreeBSD.org>
AuthorDate: 2024-07-02 04:57:01 +0000
Commit: Zhenlei Huang <zlei@FreeBSD.org>
CommitDate: 2024-07-02 04:57:01 +0000
if_vxlan(4): Exclude ETHER_CRC_LEN from macro VXLAN_MAX_MTU
The encapsulated (original) frame does not count in FCS as per Section 5
of RFC 7348.
Reviewed by: afedorov, bryanv, #network
Fixes: b7592822d5de Allow set MTU more than 1500 bytes
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D45195
---
sys/net/if_vxlan.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sys/net/if_vxlan.c b/sys/net/if_vxlan.c
index 37f987981a0c..05430768cc73 100644
--- a/sys/net/if_vxlan.c
+++ b/sys/net/if_vxlan.c
@@ -97,7 +97,7 @@ struct vxlan_socket_mc_info {
60 /* Maximum IPv4 header len */ - \
sizeof(struct udphdr) - \
sizeof(struct vxlan_header) - \
- ETHER_HDR_LEN - ETHER_CRC_LEN - ETHER_VLAN_ENCAP_LEN)
+ ETHER_HDR_LEN - ETHER_VLAN_ENCAP_LEN)
#define VXLAN_BASIC_IFCAPS (IFCAP_LINKSTATE | IFCAP_JUMBO_MTU)
#define VXLAN_SO_MC_MAX_GROUPS 32