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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2017-09-10 16:02:05 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2017-09-10 16:04:31 +0200 |
| commit | 7d906d22cf1953641303966a756f3c44535001ae (patch) | |
| tree | 87d0e000164f7c13835efbb5a1d3b8f716bc5b07 /pfinet/linux-src/net/ipv6/tcp_ipv6.c | |
| parent | 973089f3832df9887259e1927f7ead800d9dd897 (diff) | |
| download | hurd-7d906d22cf1953641303966a756f3c44535001ae.tar.gz hurd-7d906d22cf1953641303966a756f3c44535001ae.tar.bz2 hurd-7d906d22cf1953641303966a756f3c44535001ae.zip | |
pfinet: select UDP/TCP ports randomly
* pfinet/linux-src/include/net/tcp.h (tcp_port_rover): Remove
declaration
* pfinet/linux-src/include/net/udp.h (udp_port_rover): Likewise.
* pfinet/linux-src/net/ipv4/tcp_ipv4.c (tcp_port_rover): Remove
variable.
(tcp_v4_get_port): Take port hint from net_random() instead of
tcp_port_rover.
* pfinet/linux-src/net/ipv4/udp.c (udp_port_rover, udp_v4_get_port):
Likewise.
* pfinet/linux-src/net/ipv6/tcp_ipv6.c (tcp_v6_get_port): Likewise.
* pfinet/linux-src/net/ipv6/udp_ipv6.c (udp_v6_get_port): Likewise.
Diffstat (limited to 'pfinet/linux-src/net/ipv6/tcp_ipv6.c')
| -rw-r--r-- | pfinet/linux-src/net/ipv6/tcp_ipv6.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/pfinet/linux-src/net/ipv6/tcp_ipv6.c b/pfinet/linux-src/net/ipv6/tcp_ipv6.c index 3fba9af6..cca5abf4 100644 --- a/pfinet/linux-src/net/ipv6/tcp_ipv6.c +++ b/pfinet/linux-src/net/ipv6/tcp_ipv6.c @@ -130,9 +130,9 @@ static int tcp_v6_get_port(struct sock *sk, unsigned short snum) SOCKHASH_LOCK(); if (snum == 0) { - int rover = tcp_port_rover; int low = sysctl_local_port_range[0]; int high = sysctl_local_port_range[1]; + int rover = net_random() % (high - low) + low; int remaining = (high - low) + 1; do { rover++; @@ -148,7 +148,6 @@ static int tcp_v6_get_port(struct sock *sk, unsigned short snum) (void) 0; } while (--remaining > 0); - tcp_port_rover = rover; /* Exhausted local port range during search? */ if (remaining <= 0) |