From 46ec668714b5fcc7c11a7b974a7d64fc13ab62c7 Mon Sep 17 00:00:00 2001 From: Tom Gundersen Date: Fri, 16 Oct 2015 19:17:50 +0200 Subject: sd-ndisc: rename icmp6 to ndisc throughout the code --- src/libsystemd-network/sd-ndisc.c | 186 +++++++++++++++++++------------------- 1 file changed, 92 insertions(+), 94 deletions(-) (limited to 'src/libsystemd-network/sd-ndisc.c') diff --git a/src/libsystemd-network/sd-ndisc.c b/src/libsystemd-network/sd-ndisc.c index 2b979f3091..92c872e166 100644 --- a/src/libsystemd-network/sd-ndisc.c +++ b/src/libsystemd-network/sd-ndisc.c @@ -31,25 +31,25 @@ #include "icmp6-util.h" #include "sd-ndisc.h" -#define ICMP6_ROUTER_SOLICITATION_INTERVAL 4 * USEC_PER_SEC -#define ICMP6_MAX_ROUTER_SOLICITATIONS 3 +#define NDISC_ROUTER_SOLICITATION_INTERVAL 4 * USEC_PER_SEC +#define NDISC_MAX_ROUTER_SOLICITATIONS 3 -enum icmp6_nd_state { - ICMP6_NEIGHBOR_DISCOVERY_IDLE = 0, - ICMP6_ROUTER_SOLICITATION_SENT = 10, - ICMP6_ROUTER_ADVERTISMENT_LISTEN = 11, +enum NDiscState { + NDISC_STATE_IDLE = 0, + NDISC_STATE_SOLICITATION_SENT = 10, + NDISC_STATE_ADVERTISMENT_LISTEN = 11, }; #define IP6_MIN_MTU (unsigned)1280 -#define ICMP6_ND_RECV_SIZE (IP6_MIN_MTU - sizeof(struct ip6_hdr)) -#define ICMP6_OPT_LEN_UNITS 8 +#define ICMP6_RECV_SIZE (IP6_MIN_MTU - sizeof(struct ip6_hdr)) +#define NDISC_OPT_LEN_UNITS 8 -typedef struct ICMP6Prefix ICMP6Prefix; +typedef struct NDiscPrefix NDiscPrefix; -struct ICMP6Prefix { +struct NDiscPrefix { unsigned n_ref; - LIST_FIELDS(ICMP6Prefix, prefixes); + LIST_FIELDS(NDiscPrefix, prefixes); uint8_t len; sd_event_source *timeout_valid; @@ -59,14 +59,14 @@ struct ICMP6Prefix { struct sd_ndisc { unsigned n_ref; - enum icmp6_nd_state state; + enum NDiscState state; sd_event *event; int event_priority; int index; struct ether_addr mac_addr; uint32_t mtu; - ICMP6Prefix *expired_prefix; - LIST_HEAD(ICMP6Prefix, prefixes); + NDiscPrefix *expired_prefix; + LIST_HEAD(NDiscPrefix, prefixes); int fd; sd_event_source *recv; sd_event_source *timeout; @@ -75,9 +75,9 @@ struct sd_ndisc { void *userdata; }; -#define log_icmp6_nd(p, fmt, ...) log_internal(LOG_DEBUG, 0, __FILE__, __LINE__, __func__, "ICMPv6 CLIENT: " fmt, ##__VA_ARGS__) +#define log_ndisc(p, fmt, ...) log_internal(LOG_DEBUG, 0, __FILE__, __LINE__, __func__, "NDisc CLIENT: " fmt, ##__VA_ARGS__) -static ICMP6Prefix *icmp6_prefix_unref(ICMP6Prefix *prefix) { +static NDiscPrefix *ndisc_prefix_unref(NDiscPrefix *prefix) { if (!prefix) return NULL; @@ -93,12 +93,12 @@ static ICMP6Prefix *icmp6_prefix_unref(ICMP6Prefix *prefix) { return NULL; } -static int icmp6_prefix_new(ICMP6Prefix **ret) { - _cleanup_free_ ICMP6Prefix *prefix = NULL; +static int ndisc_prefix_new(NDiscPrefix **ret) { + _cleanup_free_ NDiscPrefix *prefix = NULL; assert(ret); - prefix = new0(ICMP6Prefix, 1); + prefix = new0(NDiscPrefix, 1); if (!prefix) return -ENOMEM; @@ -111,7 +111,7 @@ static int icmp6_prefix_new(ICMP6Prefix **ret) { return 0; } -static void icmp6_nd_notify(sd_ndisc *nd, int event) { +static void ndisc_notify(sd_ndisc *nd, int event) { if (nd->callback) nd->callback(nd, event, nd->userdata); } @@ -191,7 +191,7 @@ sd_ndisc *sd_ndisc_ref(sd_ndisc *nd) { return nd; } -static int icmp6_nd_init(sd_ndisc *nd) { +static int ndisc_init(sd_ndisc *nd) { assert(nd); nd->recv = sd_event_source_unref(nd->recv); @@ -202,7 +202,7 @@ static int icmp6_nd_init(sd_ndisc *nd) { } sd_ndisc *sd_ndisc_unref(sd_ndisc *nd) { - ICMP6Prefix *prefix, *p; + NDiscPrefix *prefix, *p; if (!nd) return NULL; @@ -213,13 +213,13 @@ sd_ndisc *sd_ndisc_unref(sd_ndisc *nd) { if (nd->n_ref > 0) return NULL; - icmp6_nd_init(nd); + ndisc_init(nd); sd_ndisc_detach_event(nd); LIST_FOREACH_SAFE(prefixes, prefix, p, nd->prefixes) { LIST_REMOVE(prefixes, nd->prefixes, prefix); - prefix = icmp6_prefix_unref(prefix); + prefix = ndisc_prefix_unref(prefix); } free(nd); @@ -264,10 +264,10 @@ int sd_ndisc_get_mtu(sd_ndisc *nd, uint32_t *mtu) { return 0; } -static int icmp6_ra_prefix_timeout(sd_event_source *s, uint64_t usec, +static int ndisc_prefix_timeout(sd_event_source *s, uint64_t usec, void *userdata) { sd_ndisc *nd = userdata; - ICMP6Prefix *prefix, *p; + NDiscPrefix *prefix, *p; assert(nd); @@ -275,18 +275,18 @@ static int icmp6_ra_prefix_timeout(sd_event_source *s, uint64_t usec, if (prefix->timeout_valid != s) continue; - log_icmp6_nd(nd, "Prefix expired "SD_NDISC_ADDRESS_FORMAT_STR"/%d", + log_ndisc(nd, "Prefix expired "SD_NDISC_ADDRESS_FORMAT_STR"/%d", SD_NDISC_ADDRESS_FORMAT_VAL(prefix->addr), prefix->len); LIST_REMOVE(prefixes, nd->prefixes, prefix); nd->expired_prefix = prefix; - icmp6_nd_notify(nd, + ndisc_notify(nd, SD_NDISC_EVENT_ROUTER_ADVERTISMENT_PREFIX_EXPIRED); nd->expired_prefix = NULL; - prefix = icmp6_prefix_unref(prefix); + prefix = ndisc_prefix_unref(prefix); break; } @@ -294,8 +294,8 @@ static int icmp6_ra_prefix_timeout(sd_event_source *s, uint64_t usec, return 0; } -static int icmp6_ra_prefix_set_timeout(sd_ndisc *nd, - ICMP6Prefix *prefix, +static int ndisc_prefix_set_timeout(sd_ndisc *nd, + NDiscPrefix *prefix, usec_t valid) { usec_t time_now; int r; @@ -310,7 +310,7 @@ static int icmp6_ra_prefix_set_timeout(sd_ndisc *nd, r = sd_event_add_time(nd->event, &prefix->timeout_valid, clock_boottime_or_monotonic(), time_now + valid, - USEC_PER_SEC, icmp6_ra_prefix_timeout, nd); + USEC_PER_SEC, ndisc_prefix_timeout, nd); if (r < 0) goto error; @@ -320,7 +320,7 @@ static int icmp6_ra_prefix_set_timeout(sd_ndisc *nd, goto error; r = sd_event_source_set_description(prefix->timeout_valid, - "icmp6-prefix-timeout"); + "ndisc-prefix-timeout"); error: if (r < 0) @@ -330,9 +330,9 @@ error: return r; } -static int icmp6_prefix_match(const struct in6_addr *prefix, uint8_t prefixlen, - const struct in6_addr *addr, - uint8_t addr_prefixlen) { +static int prefix_match(const struct in6_addr *prefix, uint8_t prefixlen, + const struct in6_addr *addr, + uint8_t addr_prefixlen) { uint8_t bytes, mask, len; assert_return(prefix, -EINVAL); @@ -350,13 +350,12 @@ static int icmp6_prefix_match(const struct in6_addr *prefix, uint8_t prefixlen, return 0; } -static int icmp6_ra_prefix_match(ICMP6Prefix *head, const struct in6_addr *addr, - uint8_t addr_len, ICMP6Prefix **result) { - ICMP6Prefix *prefix; +static int ndisc_prefix_match(NDiscPrefix *head, const struct in6_addr *addr, + uint8_t addr_len, NDiscPrefix **result) { + NDiscPrefix *prefix; LIST_FOREACH(prefixes, prefix, head) { - if (icmp6_prefix_match(&prefix->addr, prefix->len, addr, - addr_len) >= 0) { + if (prefix_match(&prefix->addr, prefix->len, addr, addr_len) >= 0) { *result = prefix; return 0; } @@ -367,20 +366,19 @@ static int icmp6_ra_prefix_match(ICMP6Prefix *head, const struct in6_addr *addr, int sd_ndisc_prefix_match(struct in6_addr *prefix, uint8_t prefixlen, struct in6_addr *addr) { - return icmp6_prefix_match(prefix, prefixlen, addr, - sizeof(addr->s6_addr) * 8); + return prefix_match(prefix, prefixlen, addr, sizeof(addr->s6_addr) * 8); } int sd_ndisc_get_prefixlen(sd_ndisc *nd, const struct in6_addr *addr, uint8_t *prefixlen) { int r; - ICMP6Prefix *prefix; + NDiscPrefix *prefix; assert_return(nd, -EINVAL); assert_return(addr, -EINVAL); assert_return(prefixlen, -EINVAL); - r = icmp6_ra_prefix_match(nd->prefixes, addr, + r = ndisc_prefix_match(nd->prefixes, addr, sizeof(addr->s6_addr) * 8, &prefix); if (r < 0) return r; @@ -404,10 +402,10 @@ int sd_ndisc_get_expired_prefix(sd_ndisc *nd, struct in6_addr **addr, uint8_t *p return 0; } -static int icmp6_ra_prefix_update(sd_ndisc *nd, ssize_t len, +static int ndisc_prefix_update(sd_ndisc *nd, ssize_t len, const struct nd_opt_prefix_info *prefix_opt) { int r; - ICMP6Prefix *prefix; + NDiscPrefix *prefix; uint32_t lifetime; char time_string[FORMAT_TIMESPAN_MAX]; @@ -422,7 +420,7 @@ static int icmp6_ra_prefix_update(sd_ndisc *nd, ssize_t len, lifetime = be32toh(prefix_opt->nd_opt_pi_valid_time); - r = icmp6_ra_prefix_match(nd->prefixes, + r = ndisc_prefix_match(nd->prefixes, &prefix_opt->nd_opt_pi_prefix, prefix_opt->nd_opt_pi_prefix_len, &prefix); @@ -433,7 +431,7 @@ static int icmp6_ra_prefix_update(sd_ndisc *nd, ssize_t len, callback will be called immediately to clean up the prefix */ if (r == -EADDRNOTAVAIL) { - r = icmp6_prefix_new(&prefix); + r = ndisc_prefix_new(&prefix); if (r < 0) return r; @@ -442,7 +440,7 @@ static int icmp6_ra_prefix_update(sd_ndisc *nd, ssize_t len, memcpy(&prefix->addr, &prefix_opt->nd_opt_pi_prefix, sizeof(prefix->addr)); - log_icmp6_nd(nd, "New prefix "SD_NDISC_ADDRESS_FORMAT_STR"/%d lifetime %d expires in %s", + log_ndisc(nd, "New prefix "SD_NDISC_ADDRESS_FORMAT_STR"/%d lifetime %d expires in %s", SD_NDISC_ADDRESS_FORMAT_VAL(prefix->addr), prefix->len, lifetime, format_timespan(time_string, FORMAT_TIMESPAN_MAX, lifetime * USEC_PER_SEC, USEC_PER_SEC)); @@ -455,7 +453,7 @@ static int icmp6_ra_prefix_update(sd_ndisc *nd, ssize_t len, prefixlen = MIN(prefix->len, prefix_opt->nd_opt_pi_prefix_len); - log_icmp6_nd(nd, "Prefix length mismatch %d/%d using %d", + log_ndisc(nd, "Prefix length mismatch %d/%d using %d", prefix->len, prefix_opt->nd_opt_pi_prefix_len, prefixlen); @@ -463,18 +461,18 @@ static int icmp6_ra_prefix_update(sd_ndisc *nd, ssize_t len, prefix->len = prefixlen; } - log_icmp6_nd(nd, "Update prefix "SD_NDISC_ADDRESS_FORMAT_STR"/%d lifetime %d expires in %s", + log_ndisc(nd, "Update prefix "SD_NDISC_ADDRESS_FORMAT_STR"/%d lifetime %d expires in %s", SD_NDISC_ADDRESS_FORMAT_VAL(prefix->addr), prefix->len, lifetime, format_timespan(time_string, FORMAT_TIMESPAN_MAX, lifetime * USEC_PER_SEC, USEC_PER_SEC)); } - r = icmp6_ra_prefix_set_timeout(nd, prefix, lifetime * USEC_PER_SEC); + r = ndisc_prefix_set_timeout(nd, prefix, lifetime * USEC_PER_SEC); return r; } -static int icmp6_ra_parse(sd_ndisc *nd, struct nd_router_advert *ra, +static int ndisc_ra_parse(sd_ndisc *nd, struct nd_router_advert *ra, ssize_t len) { void *opt; struct nd_opt_hdr *opt_hdr; @@ -483,8 +481,8 @@ static int icmp6_ra_parse(sd_ndisc *nd, struct nd_router_advert *ra, assert_return(ra, -EINVAL); len -= sizeof(*ra); - if (len < ICMP6_OPT_LEN_UNITS) { - log_icmp6_nd(nd, "Router Advertisement below minimum length"); + if (len < NDISC_OPT_LEN_UNITS) { + log_ndisc(nd, "Router Advertisement below minimum length"); return -ENOMSG; } @@ -492,7 +490,7 @@ static int icmp6_ra_parse(sd_ndisc *nd, struct nd_router_advert *ra, opt = ra + 1; opt_hdr = opt; - while (len != 0 && len >= opt_hdr->nd_opt_len * ICMP6_OPT_LEN_UNITS) { + while (len != 0 && len >= opt_hdr->nd_opt_len * NDISC_OPT_LEN_UNITS) { struct nd_opt_mtu *opt_mtu; uint32_t mtu; struct nd_opt_prefix_info *opt_prefix; @@ -509,7 +507,7 @@ static int icmp6_ra_parse(sd_ndisc *nd, struct nd_router_advert *ra, if (mtu != nd->mtu) { nd->mtu = MAX(mtu, IP6_MIN_MTU); - log_icmp6_nd(nd, "Router Advertisement link MTU %d using %d", + log_ndisc(nd, "Router Advertisement link MTU %d using %d", mtu, nd->mtu); } @@ -518,24 +516,24 @@ static int icmp6_ra_parse(sd_ndisc *nd, struct nd_router_advert *ra, case ND_OPT_PREFIX_INFORMATION: opt_prefix = opt; - icmp6_ra_prefix_update(nd, len, opt_prefix); + ndisc_prefix_update(nd, len, opt_prefix); break; } - len -= opt_hdr->nd_opt_len * ICMP6_OPT_LEN_UNITS; + len -= opt_hdr->nd_opt_len * NDISC_OPT_LEN_UNITS; opt = (void *)((char *)opt + - opt_hdr->nd_opt_len * ICMP6_OPT_LEN_UNITS); + opt_hdr->nd_opt_len * NDISC_OPT_LEN_UNITS); opt_hdr = opt; } if (len > 0) - log_icmp6_nd(nd, "Router Advertisement contains %zd bytes of trailing garbage", len); + log_ndisc(nd, "Router Advertisement contains %zd bytes of trailing garbage", len); return 0; } -static int icmp6_router_advertisment_recv(sd_event_source *s, int fd, uint32_t revents, void *userdata) { +static int ndisc_router_advertisment_recv(sd_event_source *s, int fd, uint32_t revents, void *userdata) { sd_ndisc *nd = userdata; int r, buflen = 0; ssize_t len; @@ -548,7 +546,7 @@ static int icmp6_router_advertisment_recv(sd_event_source *s, int fd, uint32_t r r = ioctl(fd, FIONREAD, &buflen); if (r < 0 || buflen <= 0) - buflen = ICMP6_ND_RECV_SIZE; + buflen = ICMP6_RECV_SIZE; ra = malloc(buflen); if (!ra) @@ -556,7 +554,7 @@ static int icmp6_router_advertisment_recv(sd_event_source *s, int fd, uint32_t r len = read(fd, ra, buflen); if (len < 0) { - log_icmp6_nd(nd, "Could not receive message from UDP socket: %m"); + log_ndisc(nd, "Could not receive message from UDP socket: %m"); return 0; } @@ -568,7 +566,7 @@ static int icmp6_router_advertisment_recv(sd_event_source *s, int fd, uint32_t r nd->timeout = sd_event_source_unref(nd->timeout); - nd->state = ICMP6_ROUTER_ADVERTISMENT_LISTEN; + nd->state = NDISC_STATE_ADVERTISMENT_LISTEN; if (ra->nd_ra_flags_reserved & ND_RA_FLAG_OTHER ) event = SD_NDISC_EVENT_ROUTER_ADVERTISMENT_OTHER; @@ -576,25 +574,25 @@ static int icmp6_router_advertisment_recv(sd_event_source *s, int fd, uint32_t r if (ra->nd_ra_flags_reserved & ND_RA_FLAG_MANAGED) event = SD_NDISC_EVENT_ROUTER_ADVERTISMENT_MANAGED; - log_icmp6_nd(nd, "Received Router Advertisement flags %s/%s", + log_ndisc(nd, "Received Router Advertisement flags %s/%s", ra->nd_ra_flags_reserved & ND_RA_FLAG_MANAGED? "MANAGED": "none", ra->nd_ra_flags_reserved & ND_RA_FLAG_OTHER? "OTHER": "none"); if (event != SD_NDISC_EVENT_ROUTER_ADVERTISMENT_NONE) { - r = icmp6_ra_parse(nd, ra, len); + r = ndisc_ra_parse(nd, ra, len); if (r < 0) { - log_icmp6_nd(nd, "Could not parse Router Advertisement: %s", + log_ndisc(nd, "Could not parse Router Advertisement: %s", strerror(-r)); return 0; } } - icmp6_nd_notify(nd, event); + ndisc_notify(nd, event); return 0; } -static int icmp6_router_solicitation_timeout(sd_event_source *s, uint64_t usec, void *userdata) { +static int ndisc_router_solicitation_timeout(sd_event_source *s, uint64_t usec, void *userdata) { sd_ndisc *nd = userdata; uint64_t time_now, next_timeout; struct ether_addr unset = { }; @@ -607,49 +605,49 @@ static int icmp6_router_solicitation_timeout(sd_event_source *s, uint64_t usec, nd->timeout = sd_event_source_unref(nd->timeout); - if (nd->nd_sent >= ICMP6_MAX_ROUTER_SOLICITATIONS) { - icmp6_nd_notify(nd, SD_NDISC_EVENT_ROUTER_ADVERTISMENT_TIMEOUT); - nd->state = ICMP6_ROUTER_ADVERTISMENT_LISTEN; + if (nd->nd_sent >= NDISC_MAX_ROUTER_SOLICITATIONS) { + ndisc_notify(nd, SD_NDISC_EVENT_ROUTER_ADVERTISMENT_TIMEOUT); + nd->state = NDISC_STATE_ADVERTISMENT_LISTEN; } else { if (memcmp(&nd->mac_addr, &unset, sizeof(struct ether_addr))) addr = &nd->mac_addr; r = icmp6_send_router_solicitation(nd->fd, addr); if (r < 0) - log_icmp6_nd(nd, "Error sending Router Solicitation"); + log_ndisc(nd, "Error sending Router Solicitation"); else { - nd->state = ICMP6_ROUTER_SOLICITATION_SENT; - log_icmp6_nd(nd, "Sent Router Solicitation"); + nd->state = NDISC_STATE_SOLICITATION_SENT; + log_ndisc(nd, "Sent Router Solicitation"); } nd->nd_sent++; r = sd_event_now(nd->event, clock_boottime_or_monotonic(), &time_now); if (r < 0) { - icmp6_nd_notify(nd, r); + ndisc_notify(nd, r); return 0; } - next_timeout = time_now + ICMP6_ROUTER_SOLICITATION_INTERVAL; + next_timeout = time_now + NDISC_ROUTER_SOLICITATION_INTERVAL; r = sd_event_add_time(nd->event, &nd->timeout, clock_boottime_or_monotonic(), next_timeout, 0, - icmp6_router_solicitation_timeout, nd); + ndisc_router_solicitation_timeout, nd); if (r < 0) { - icmp6_nd_notify(nd, r); + ndisc_notify(nd, r); return 0; } r = sd_event_source_set_priority(nd->timeout, nd->event_priority); if (r < 0) { - icmp6_nd_notify(nd, r); + ndisc_notify(nd, r); return 0; } - r = sd_event_source_set_description(nd->timeout, "icmp6-timeout"); + r = sd_event_source_set_description(nd->timeout, "ndisc-timeout"); if (r < 0) { - icmp6_nd_notify(nd, r); + ndisc_notify(nd, r); return 0; } } @@ -661,11 +659,11 @@ int sd_ndisc_stop(sd_ndisc *nd) { assert_return(nd, -EINVAL); assert_return(nd->event, -EINVAL); - log_icmp6_nd(client, "Stop ICMPv6"); + log_ndisc(client, "Stop NDisc"); - icmp6_nd_init(nd); + ndisc_init(nd); - nd->state = ICMP6_NEIGHBOR_DISCOVERY_IDLE; + nd->state = NDISC_STATE_IDLE; return 0; } @@ -676,7 +674,7 @@ int sd_ndisc_router_discovery_start(sd_ndisc *nd) { assert(nd); assert(nd->event); - if (nd->state != ICMP6_NEIGHBOR_DISCOVERY_IDLE) + if (nd->state != NDISC_STATE_IDLE) return -EINVAL; if (nd->index < 1) @@ -689,7 +687,7 @@ int sd_ndisc_router_discovery_start(sd_ndisc *nd) { nd->fd = r; r = sd_event_add_io(nd->event, &nd->recv, nd->fd, EPOLLIN, - icmp6_router_advertisment_recv, nd); + ndisc_router_advertisment_recv, nd); if (r < 0) goto error; @@ -697,12 +695,12 @@ int sd_ndisc_router_discovery_start(sd_ndisc *nd) { if (r < 0) goto error; - r = sd_event_source_set_description(nd->recv, "icmp6-receive-message"); + r = sd_event_source_set_description(nd->recv, "ndisc-receive-message"); if (r < 0) goto error; r = sd_event_add_time(nd->event, &nd->timeout, clock_boottime_or_monotonic(), - 0, 0, icmp6_router_solicitation_timeout, nd); + 0, 0, ndisc_router_solicitation_timeout, nd); if (r < 0) goto error; @@ -710,12 +708,12 @@ int sd_ndisc_router_discovery_start(sd_ndisc *nd) { if (r < 0) goto error; - r = sd_event_source_set_description(nd->timeout, "icmp6-timeout"); + r = sd_event_source_set_description(nd->timeout, "ndisc-timeout"); error: if (r < 0) - icmp6_nd_init(nd); + ndisc_init(nd); else - log_icmp6_nd(client, "Start Router Solicitation"); + log_ndisc(client, "Start Router Solicitation"); return r; } -- cgit v1.2.3-54-g00ecf