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>
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@ -1118,6 +1118,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
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int err;
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int offset = 0;
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int csummode = CHECKSUM_NONE;
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__u8 tx_flags = 0;
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if (flags&MSG_PROBE)
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return 0;
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@ -1202,6 +1203,13 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
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}
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}
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/* For UDP, check if TX timestamp is enabled */
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if (sk->sk_type == SOCK_DGRAM) {
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err = sock_tx_timestamp(sk, &tx_flags);
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if (err)
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goto error;
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}
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/*
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* Let's try using as much space as possible.
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* Use MTU if total length of the message fits into the MTU.
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@ -1306,6 +1314,12 @@ alloc_new_skb:
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sk->sk_allocation);
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if (unlikely(skb == NULL))
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err = -ENOBUFS;
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else {
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/* Only the initial fragment
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* is time stamped.
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*/
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tx_flags = 0;
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}
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}
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if (skb == NULL)
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goto error;
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@ -1317,6 +1331,9 @@ alloc_new_skb:
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/* reserve for fragmentation */
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skb_reserve(skb, hh_len+sizeof(struct frag_hdr));
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if (sk->sk_type == SOCK_DGRAM)
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skb_shinfo(skb)->tx_flags = tx_flags;
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/*
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* Find where to start putting bytes
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*/
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