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| author | Willem de Bruijn <willemb@google.com> | 2019-09-11 15:50:51 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-09-13 21:44:19 +0200 |
| commit | c6af0c227a22bb6bb8ff72f043e0fb6d99fd6515 (patch) | |
| tree | 12f4f3b38877b029a5342e2a8f63d8131dad9b27 /net/ipv6/raw.c | |
| parent | 823eb2a3c4c7f1b3e749f0dddb70bf8b09a76a10 (diff) | |
| download | linux-c6af0c227a22bb6bb8ff72f043e0fb6d99fd6515.tar.gz | |
ip: support SO_MARK cmsg
Enable setting skb->mark for UDP and RAW sockets using cmsg.
This is analogous to existing support for TOS, TTL, txtime, etc.
Packet sockets already support this as of commit c7d39e32632e
("packet: support per-packet fwmark for af_packet sendmsg").
Similar to other fields, implement by
1. initialize the sockcm_cookie.mark from socket option sk_mark
2. optionally overwrite this in ip_cmsg_send/ip6_datagram_send_ctl
3. initialize inet_cork.mark from sockcm_cookie.mark
4. initialize each (usually just one) skb->mark from inet_cork.mark
Step 1 is handled in one location for most protocols by ipcm_init_sk
as of commit 351782067b6b ("ipv4: ipcm_cookie initializers").
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/raw.c')
| -rw-r--r-- | net/ipv6/raw.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c index 8a6131991e38..6e1888ee4036 100644 --- a/net/ipv6/raw.c +++ b/net/ipv6/raw.c @@ -646,7 +646,7 @@ static int rawv6_send_hdrinc(struct sock *sk, struct msghdr *msg, int length, skb->protocol = htons(ETH_P_IPV6); skb->priority = sk->sk_priority; - skb->mark = sk->sk_mark; + skb->mark = sockc->mark; skb->tstamp = sockc->transmit_time; skb_put(skb, length); @@ -810,6 +810,7 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) ipcm6_init(&ipc6); ipc6.sockc.tsflags = sk->sk_tsflags; + ipc6.sockc.mark = sk->sk_mark; if (sin6) { if (addr_len < SIN6_LEN_RFC2133) @@ -891,6 +892,7 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) opt = ipv6_fixup_options(&opt_space, opt); fl6.flowi6_proto = proto; + fl6.flowi6_mark = ipc6.sockc.mark; if (!hdrincl) { rfv.msg = msg; |