diff options
| author | Xin Long <lucien.xin@gmail.com> | 2023-05-14 15:52:27 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-05-15 10:21:20 +0100 |
| commit | 3ae6d66b605be604644d4bb5708a7ffd9cf1abe8 (patch) | |
| tree | 852a58a81d9f9746e4d7b8e98b379d46c90f0cce /net/tipc/udp_media.c | |
| parent | b48a18644046c9bc0667493a147dfa01e8241eab (diff) | |
tipc: add tipc_bearer_min_mtu to calculate min mtu
As different media may requires different min mtu, and even the
same media with different net family requires different min mtu,
add tipc_bearer_min_mtu() to calculate min mtu accordingly.
This API will be used to check the new mtu when doing the link
mtu negotiation in the next patch.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/udp_media.c')
| -rw-r--r-- | net/tipc/udp_media.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c index c2bb818704c8..0a85244fd618 100644 --- a/net/tipc/udp_media.c +++ b/net/tipc/udp_media.c @@ -738,8 +738,8 @@ static int tipc_udp_enable(struct net *net, struct tipc_bearer *b, udp_conf.local_ip.s_addr = local.ipv4.s_addr; udp_conf.use_udp_checksums = false; ub->ifindex = dev->ifindex; - if (tipc_mtu_bad(dev, sizeof(struct iphdr) + - sizeof(struct udphdr))) { + b->encap_hlen = sizeof(struct iphdr) + sizeof(struct udphdr); + if (tipc_mtu_bad(dev, b->encap_hlen)) { err = -EINVAL; goto err; } @@ -760,6 +760,7 @@ static int tipc_udp_enable(struct net *net, struct tipc_bearer *b, else udp_conf.local_ip6 = local.ipv6; ub->ifindex = dev->ifindex; + b->encap_hlen = sizeof(struct ipv6hdr) + sizeof(struct udphdr); b->mtu = 1280; #endif } else { |