diff options
| author | Eric Dumazet <edumazet@google.com> | 2023-09-12 12:17:21 +0300 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2023-09-14 17:16:36 +0300 |
| commit | 81b36803ac139827538ac5ce4028e750a3c53f53 (patch) | |
| tree | 8eeb82cd0a96601d235e12aa9beda4753af769ba /include/linux/udp.h | |
| parent | 486e6ca6b48d68d7fefc99e15cc1865e2210d893 (diff) | |
| download | linux-81b36803ac139827538ac5ce4028e750a3c53f53.tar.xz | |
udp: introduce udp->udp_flags
According to syzbot, it is time to use proper atomic flags
for various UDP flags.
Add udp_flags field, and convert udp->corkflag to first
bit in it.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'include/linux/udp.h')
| -rw-r--r-- | include/linux/udp.h | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/include/linux/udp.h b/include/linux/udp.h index 43c1fb2d2c21..23f0693e0d9c 100644 --- a/include/linux/udp.h +++ b/include/linux/udp.h @@ -32,14 +32,20 @@ static inline u32 udp_hashfn(const struct net *net, u32 num, u32 mask) return (num + net_hash_mix(net)) & mask; } +enum { + UDP_FLAGS_CORK, /* Cork is required */ +}; + struct udp_sock { /* inet_sock has to be the first member */ struct inet_sock inet; #define udp_port_hash inet.sk.__sk_common.skc_u16hashes[0] #define udp_portaddr_hash inet.sk.__sk_common.skc_u16hashes[1] #define udp_portaddr_node inet.sk.__sk_common.skc_portaddr_node + + unsigned long udp_flags; + int pending; /* Any pending frames ? */ - unsigned int corkflag; /* Cork is required */ __u8 encap_type; /* Is this an Encapsulation socket? */ unsigned char no_check6_tx:1,/* Send zero UDP6 checksums on TX? */ no_check6_rx:1,/* Allow zero UDP6 checksums on RX? */ @@ -51,6 +57,11 @@ struct udp_sock { gro_enabled:1, /* Request GRO aggregation */ accept_udp_l4:1, accept_udp_fraglist:1; +/* indicator bits used by pcflag: */ +#define UDPLITE_BIT 0x1 /* set by udplite proto init function */ +#define UDPLITE_SEND_CC 0x2 /* set via udplite setsockopt */ +#define UDPLITE_RECV_CC 0x4 /* set via udplite setsocktopt */ + __u8 pcflag; /* marks socket as UDP-Lite if > 0 */ /* * Following member retains the information to create a UDP header * when the socket is uncorked. @@ -62,12 +73,6 @@ struct udp_sock { */ __u16 pcslen; __u16 pcrlen; -/* indicator bits used by pcflag: */ -#define UDPLITE_BIT 0x1 /* set by udplite proto init function */ -#define UDPLITE_SEND_CC 0x2 /* set via udplite setsockopt */ -#define UDPLITE_RECV_CC 0x4 /* set via udplite setsocktopt */ - __u8 pcflag; /* marks socket as UDP-Lite if > 0 */ - __u8 unused[3]; /* * For encapsulation sockets. */ @@ -95,6 +100,15 @@ struct udp_sock { int forward_threshold; }; +#define udp_test_bit(nr, sk) \ + test_bit(UDP_FLAGS_##nr, &udp_sk(sk)->udp_flags) +#define udp_set_bit(nr, sk) \ + set_bit(UDP_FLAGS_##nr, &udp_sk(sk)->udp_flags) +#define udp_clear_bit(nr, sk) \ + clear_bit(UDP_FLAGS_##nr, &udp_sk(sk)->udp_flags) +#define udp_assign_bit(nr, sk, val) \ + assign_bit(UDP_FLAGS_##nr, &udp_sk(sk)->udp_flags, val) + #define UDP_MAX_SEGMENTS (1 << 6UL) #define udp_sk(ptr) container_of_const(ptr, struct udp_sock, inet.sk) |