/* * netsniff-ng - the packet sniffing beast * Copyright 2009, 2010 Daniel Borkmann. * Subject to the GPL, version 2. */ #ifndef RING_H #define RING_H /* * "I love the smell of 10GbE in the morning. Smells like ... victory." * - W. Richard Stevens, "Secret Teachings of the UNIX Environment" */ #include #include #include #include #include #include #include #include #include "built_in.h" #include "die.h" #include "dev.h" #include "config.h" #ifndef POLLRDNORM # define POLLRDNORM 0x0040 #endif union tpacket_uhdr { struct tpacket_hdr *h1; struct tpacket2_hdr *h2; #ifdef HAVE_TPACKET3 struct tpacket3_hdr *h3; #endif void *raw; }; #ifdef HAVE_TPACKET3 #define tpacket_uhdr(hdr, member, v3) \ ((v3) ? ((hdr).h3)->member : ((hdr).h2)->member) #else #define tpacket_uhdr(hdr, member, v3) \ (((hdr).h2)->member) #endif /* HAVE_TPACKET3 */ struct frame_map { struct tpacket2_hdr tp_h __aligned_tpacket; struct sockaddr_ll s_ll __align_tpacket(sizeof(struct tpacket2_hdr)); }; #ifdef HAVE_TPACKET3 struct block_desc { uint32_t version; uint32_t offset_to_priv; struct tpacket_hdr_v1 h1; }; #endif struct ring { struct iovec *frames; uint8_t *mm_space; size_t mm_len; struct sockaddr_ll s_ll; union { struct tpacket_req layout; #ifdef HAVE_TPACKET3 struct tpacket_req3 layout3; #endif uint8_t raw; }; }; static inline void next_rnd_slot(unsigned int *it, struct ring *ring) { *it = rand() % ring->layout.tp_frame_nr; } static inline size_t ring_size(char *ifname, size_t size) { if (size > 0) return size; /* * Device bitrate in bytes times two as ring size. * Fallback => ~ 64,00 MB * 10 MBit => ~ 2,38 MB * 54 MBit => ~ 12,88 MB * 100 MBit => ~ 23,84 MB * 300 MBit => ~ 71,52 MB * 1.000 MBit => ~ 238,42 MB * 10.000 MBit => ~ 2.384.18 MB */ size = device_bitrate(ifname); size = (size * 1000000) / 8; size = size * 2; if (size == 0) size = 1 << 26; return round_up_cacheline(size); } static inline unsigned int ring_frame_size(struct ring *ring) { return ring->layout.tp_frame_size; } static inline void ring_verify_layout(struct ring *ring) { bug_on(ring->layout.tp_block_size < ring->layout.tp_frame_size); bug_on((ring->layout.tp_block_size % ring->layout.tp_frame_size) != 0); bug_on((ring->layout.tp_block_size % RUNTIME_PAGE_SIZE) != 0); } static inline void tpacket_hdr_clone(struct tpacket2_hdr *thdrd, struct tpacket2_hdr *thdrs) { thdrd->tp_sec = thdrs->tp_sec; thdrd->tp_nsec = thdrs->tp_nsec; thdrd->tp_snaplen = thdrs->tp_snaplen; thdrd->tp_len = thdrs->tp_len; } static inline void prepare_polling(int sock, struct pollfd *pfd) { memset(pfd, 0, sizeof(*pfd)); pfd->fd = sock; pfd->revents = 0; pfd->events = POLLIN | POLLRDNORM | POLLERR; } static inline void __set_sockopt_tpacket(int sock, int val) { int ret = setsockopt(sock, SOL_PACKET, PACKET_VERSION, &val, sizeof(val)); if (ret) panic("Cannot set tpacketv2!\n"); } static inline void set_sockopt_tpacket_v2(int sock) { __set_sockopt_tpacket(sock, TPACKET_V2); } #ifdef HAVE_TPACKET3 static inline void set_sockopt_tpacket_v3(int sock) { __set_sockopt_tpacket(sock, TPACKET_V3); } #else static inline void set_sockopt_tpacket_v3(int sock __maybe_unused) { } #endif static inline int get_sockopt_tpacket(int sock) { int val, ret; socklen_t len = sizeof(val); ret = getsockopt(sock, SOL_PACKET, PACKET_VERSION, &val, &len); if (ret) panic("Cannot get tpacket version!\n"); return val; } extern void mmap_ring_generic(int sock, struct ring *ring); extern void alloc_ring_frames_generic(struct ring *ring, int num, size_t size); extern void bind_ring_generic(int sock, struct ring *ring, int ifindex, bool tx_only); #endif /* RING_H */ de?h=nds-private-remove&id=3abbac0b5dd3e3b3dfb30a4885cdde5c20e1cb83'>can: rx-offload: Add support for timestamp based irq offloadingMarc Kleine-Budde1-1/+9 2017-02-06can: rx-offload: Add support for HW fifo based irq offloadingDavid Jander1-0/+51 2017-02-05net: remove __napi_complete()Eric Dumazet1-1/+0 2017-02-04net: ipv6: Change notifications for multipath add to RTA_MULTIPATHDavid Ahern1-0/+1 2017-02-04net: ipv6: Allow shorthand delete of all nexthops in multipath routeDavid Ahern1-1/+3 2017-02-03net: remove support for per driver ndo_busy_poll()Eric Dumazet2-5/+0 2017-02-03Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-nextDavid S. Miller11-40/+60 2017-02-03sched: cls_flower: expose priority to offloading netdeviceJiri Pirko1-0/+1 2017-02-03lib: Introduce priority array area managerJiri Pirko1-0/+76 2017-02-03list: introduce list_for_each_entry_from_reverse helperJiri Pirko1-0/+13 2017-02-03trace: rename trace_print_hex_seq arg and add kdocDaniel Borkmann2-3/+3 2017-02-03bridge: uapi: add per vlan tunnel infoRoopa Prabhu3-0/+13 2017-02-03vxlan: support fdb and learning in COLLECT_METADATA modeRoopa Prabhu1-0/+1 2017-02-03ip_tunnels: new IP_TUNNEL_INFO_BRIDGE flag for ip_tunnel_info modeRoopa Prabhu1-0/+1 2017-02-03net/sched: act_ife: Change to use ife moduleYotam Gigi2-10/+1 2017-02-03net: Introduce ife encapsulation moduleYotam Gigi3-0/+70 2017-02-03net/sched: act_ife: Unexport ife_tlv_meta_encodeYotam Gigi1-2/+0 2017-02-03tcp: add tcp_mss_clamp() helperEric Dumazet1-0/+9 2017-02-02net: add LINUX_MIB_PFMEMALLOCDROP counterEric Dumazet1-0/+1 2017-02-02net: phy: marvell: Add support for 88e1545 PHYAndrew Lunn1-0/+1 2017-02-02unix: add ioctl to open a unix socket file with O_PATHAndrey Vagin1-0/+2 2017-02-02net: phy: Marvell: Add mv88e6390 internal PHYAndrew Lunn1-0/+6 2017-02-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller9-30/+40 2017-02-02netfilter: allow logging from non-init namespacesMichal Kubeček1-0/+3 2017-02-02ipvs: free ip_vs_dest structs when refcnt=0David Windsor1-1/+1 2017-02-02netfilter: merge ctinfo into nfct pointer storage areaFlorian Westphal2-17/+15 2017-02-02netfilter: guarantee 8 byte minalign for template addressesFlorian Westphal1-0/+2 2017-02-02netfilter: add and use nf_ct_set helperFlorian Westphal2-2/+9 2017-02-02skbuff: add and use skb_nfct helperFlorian Westphal2-4/+11 2017-02-02netfilter: reduce direct skb->nfct usageFlorian Westphal1-3/+6 2017-02-02netfilter: conntrack: no need to pass ctinfo to error handlerFlorian Westphal1-1/+1