/* * netsniff-ng - the packet sniffing beast * Copyright 2009, 2010 Daniel Borkmann. * Subject to the GPL, version 2. */ #ifndef TX_RING_H #define TX_RING_H #include #include "ring.h" #include "built_in.h" /* Give userland 10 us time to push packets to the ring */ #define TX_KERNEL_PULL_INT 10 extern void destroy_tx_ring(int sock, struct ring *ring); extern void create_tx_ring(int sock, struct ring *ring, int verbose); extern void mmap_tx_ring(int sock, struct ring *ring); extern void alloc_tx_ring_frames(int sock, struct ring *ring); extern void bind_tx_ring(int sock, struct ring *ring, int ifindex); extern void setup_tx_ring_layout(int sock, struct ring *ring, unsigned int size, bool jumbo_support); extern void set_packet_loss_discard(int sock); static inline int user_may_pull_from_tx(struct tpacket2_hdr *hdr) { return !(hdr->tp_status & (TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING)); } static inline void kernel_may_pull_from_tx(struct tpacket2_hdr *hdr) { hdr->tp_status = TP_STATUS_SEND_REQUEST; } static inline int pull_and_flush_tx_ring(int sock) { return sendto(sock, NULL, 0, MSG_DONTWAIT, NULL, 0); } static inline int pull_and_flush_tx_ring_wait(int sock) { return sendto(sock, NULL, 0, 0, NULL, 0); } #endif /* TX_RING_H */ p-back'>packet-loop-back net-next plumbingsTobias Klauser
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authorFeng <fgao@ikuai8.com>2017-01-20 21:40:43 +0800
committerPablo Neira Ayuso <pablo@netfilter.org>2017-02-02 14:30:19 +0100
commit10435c1192d06bdb0bac7666452d8219d7e7c477 (patch)
tree93b76419142fe17b1d162d062c663297a3e8a965 /sound/isa/gus/gus_io.c
parent1a28ad74ebd8f9d3c7eae0d781f72a6d30545e17 (diff)
netfilter: nf_tables: Eliminate duplicated code in nf_tables_table_enable()
If something fails in nf_tables_table_enable(), it unregisters the chains. But the rollback code is the same as nf_tables_table_disable() almostly, except there is one counter check. Now create one wrapper function to eliminate the duplicated codes. Signed-off-by: Feng <fgao@ikuai8.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'sound/isa/gus/gus_io.c')