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| author | Anders Berggren <anders@halon.se> | 2011-02-28 12:32:11 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-02-28 12:32:11 -0800 |
| commit | a693e69897e7811e2790295f38a0ce3a92c4b45c (patch) | |
| tree | 2c3cd9d7288821a7b71dc7f4481462150f41de63 /net | |
| parent | eaaa3a7c4da2bdc48e536bb750860253150cb931 (diff) | |
| download | linux-stable-a693e69897e7811e2790295f38a0ce3a92c4b45c.tar.gz linux-stable-a693e69897e7811e2790295f38a0ce3a92c4b45c.tar.bz2 linux-stable-a693e69897e7811e2790295f38a0ce3a92c4b45c.zip | |
net: TX timestamps for IPv6 UDP packets
Enabling TX timestamps (SO_TIMESTAMPING) for IPv6 UDP packets, in
the same fashion as for IPv4. Necessary in order for NICs such as
Intel 82580 to timestamp IPv6 packets.
Signed-off-by: Anders Berggren <anders@halon.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv6/ip6_output.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 25a2647f9942..065b3f7614fb 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -1118,6 +1118,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to, int err; int offset = 0; int csummode = CHECKSUM_NONE; + __u8 tx_flags = 0; if (flags&MSG_PROBE) return 0; @@ -1202,6 +1203,13 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to, } } + /* For UDP, check if TX timestamp is enabled */ + if (sk->sk_type == SOCK_DGRAM) { + err = sock_tx_timestamp(sk, &tx_flags); + if (err) + goto error; + } + /* * Let's try using as much space as possible. * Use MTU if total length of the message fits into the MTU. @@ -1306,6 +1314,12 @@ alloc_new_skb: sk->sk_allocation); if (unlikely(skb == NULL)) err = -ENOBUFS; + else { + /* Only the initial fragment + * is time stamped. + */ + tx_flags = 0; + } } if (skb == NULL) goto error; @@ -1317,6 +1331,9 @@ alloc_new_skb: /* reserve for fragmentation */ skb_reserve(skb, hh_len+sizeof(struct frag_hdr)); + if (sk->sk_type == SOCK_DGRAM) + skb_shinfo(skb)->tx_flags = tx_flags; + /* * Find where to start putting bytes */ |