From f522a5fcf6dbba92f05bee5bb07f70fa8e521ab2 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 9 Nov 2016 11:24:22 -0800 Subject: [PATCH] tcp: remove unaligned accesses from tcp_get_info() After commit 6ed46d1247a5 ("sock_diag: align nlattr properly when needed"), tcp_get_info() gets 64bit aligned memory, so we can avoid the unaligned helpers. Suggested-by: David Miller Signed-off-by: Eric Dumazet Acked-by: Soheil Hassas Yeganeh Acked-by: Yuchung Cheng Signed-off-by: David S. Miller --- net/ipv4/tcp.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index a7d54cbcdabb..f8f924ca662d 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -279,7 +279,6 @@ #include #include -#include #include int sysctl_tcp_min_tso_segs __read_mostly = 2; @@ -2722,11 +2721,11 @@ void tcp_get_info(struct sock *sk, struct tcp_info *info) /* Report meaningful fields for all TCP states, including listeners */ rate = READ_ONCE(sk->sk_pacing_rate); rate64 = rate != ~0U ? rate : ~0ULL; - put_unaligned(rate64, &info->tcpi_pacing_rate); + info->tcpi_pacing_rate = rate64; rate = READ_ONCE(sk->sk_max_pacing_rate); rate64 = rate != ~0U ? rate : ~0ULL; - put_unaligned(rate64, &info->tcpi_max_pacing_rate); + info->tcpi_max_pacing_rate = rate64; info->tcpi_reordering = tp->reordering; info->tcpi_snd_cwnd = tp->snd_cwnd; @@ -2792,8 +2791,8 @@ void tcp_get_info(struct sock *sk, struct tcp_info *info) slow = lock_sock_fast(sk); - put_unaligned(tp->bytes_acked, &info->tcpi_bytes_acked); - put_unaligned(tp->bytes_received, &info->tcpi_bytes_received); + info->tcpi_bytes_acked = tp->bytes_acked; + info->tcpi_bytes_received = tp->bytes_received; info->tcpi_notsent_bytes = max_t(int, 0, tp->write_seq - tp->snd_nxt); unlock_sock_fast(sk, slow); @@ -2811,7 +2810,7 @@ void tcp_get_info(struct sock *sk, struct tcp_info *info) if (rate && intv) { rate64 = (u64)rate * tp->mss_cache * USEC_PER_SEC; do_div(rate64, intv); - put_unaligned(rate64, &info->tcpi_delivery_rate); + info->tcpi_delivery_rate = rate64; } } EXPORT_SYMBOL_GPL(tcp_get_info); -- 2.20.1