diff options
Diffstat (limited to 'src/libsystemd-network/sd-lldp.c')
| -rw-r--r-- | src/libsystemd-network/sd-lldp.c | 111 |
1 files changed, 44 insertions, 67 deletions
diff --git a/src/libsystemd-network/sd-lldp.c b/src/libsystemd-network/sd-lldp.c index c75d6079e1..969fc71051 100644 --- a/src/libsystemd-network/sd-lldp.c +++ b/src/libsystemd-network/sd-lldp.c @@ -2,36 +2,47 @@ #include <arpa/inet.h> #include <linux/sockios.h> +#include <sys/ioctl.h> #include "sd-lldp.h" #include "alloc-util.h" +#include "ether-addr-util.h" +#include "event-util.h" #include "fd-util.h" #include "lldp-internal.h" #include "lldp-neighbor.h" #include "lldp-network.h" #include "socket-util.h" -#include "ether-addr-util.h" +#include "string-table.h" #define LLDP_DEFAULT_NEIGHBORS_MAX 128U -static void lldp_flush_neighbors(sd_lldp *lldp) { - sd_lldp_neighbor *n; +static const char * const lldp_event_table[_SD_LLDP_EVENT_MAX] = { + [SD_LLDP_EVENT_ADDED] = "added", + [SD_LLDP_EVENT_REMOVED] = "removed", + [SD_LLDP_EVENT_UPDATED] = "updated", + [SD_LLDP_EVENT_REFRESHED] = "refreshed", +}; + +DEFINE_STRING_TABLE_LOOKUP(lldp_event, sd_lldp_event); +static void lldp_flush_neighbors(sd_lldp *lldp) { assert(lldp); - while ((n = hashmap_first(lldp->neighbor_by_id))) - lldp_neighbor_unlink(n); + hashmap_clear(lldp->neighbor_by_id); } static void lldp_callback(sd_lldp *lldp, sd_lldp_event event, sd_lldp_neighbor *n) { assert(lldp); + assert(event >= 0 && event < _SD_LLDP_EVENT_MAX); - log_lldp("Invoking callback for '%c'.", event); - - if (!lldp->callback) + if (!lldp->callback) { + log_lldp("Received '%s' event.", lldp_event_to_string(event)); return; + } + log_lldp("Invoking callback for '%s' event.", lldp_event_to_string(event)); lldp->callback(lldp, event, n, lldp->userdata); } @@ -119,7 +130,7 @@ static int lldp_add_neighbor(sd_lldp *lldp, sd_lldp_neighbor *n) { } if (lldp_neighbor_equal(n, old)) { - /* Is this equal, then restart the TTL counter, but don't do anyting else. */ + /* Is this equal, then restart the TTL counter, but don't do anything else. */ old->timestamp = n->timestamp; lldp_start_timer(lldp, old); lldp_callback(lldp, SD_LLDP_EVENT_REFRESHED, old); @@ -223,7 +234,7 @@ static int lldp_receive_datagram(sd_event_source *s, int fd, uint32_t revents, v static void lldp_reset(sd_lldp *lldp) { assert(lldp); - lldp->timer_event_source = sd_event_source_unref(lldp->timer_event_source); + (void) event_source_disable(lldp->timer_event_source); lldp->io_event_source = sd_event_source_unref(lldp->io_event_source); lldp->fd = safe_close(lldp->fd); } @@ -329,27 +340,10 @@ _public_ int sd_lldp_set_ifindex(sd_lldp *lldp, int ifindex) { return 0; } -_public_ sd_lldp* sd_lldp_ref(sd_lldp *lldp) { - - if (!lldp) - return NULL; - - assert(lldp->n_ref > 0); - lldp->n_ref++; - - return lldp; -} - -_public_ sd_lldp* sd_lldp_unref(sd_lldp *lldp) { - - if (!lldp) - return NULL; - - assert(lldp->n_ref > 0); - lldp->n_ref --; +static sd_lldp* lldp_free(sd_lldp *lldp) { + assert(lldp); - if (lldp->n_ref > 0) - return NULL; + lldp->timer_event_source = sd_event_source_unref(lldp->timer_event_source); lldp_reset(lldp); sd_lldp_detach_event(lldp); @@ -360,22 +354,26 @@ _public_ sd_lldp* sd_lldp_unref(sd_lldp *lldp) { return mfree(lldp); } +DEFINE_PUBLIC_TRIVIAL_REF_UNREF_FUNC(sd_lldp, sd_lldp, lldp_free); + _public_ int sd_lldp_new(sd_lldp **ret) { _cleanup_(sd_lldp_unrefp) sd_lldp *lldp = NULL; int r; assert_return(ret, -EINVAL); - lldp = new0(sd_lldp, 1); + lldp = new(sd_lldp, 1); if (!lldp) return -ENOMEM; - lldp->n_ref = 1; - lldp->fd = -1; - lldp->neighbors_max = LLDP_DEFAULT_NEIGHBORS_MAX; - lldp->capability_mask = (uint16_t) -1; + *lldp = (sd_lldp) { + .n_ref = 1, + .fd = -1, + .neighbors_max = LLDP_DEFAULT_NEIGHBORS_MAX, + .capability_mask = (uint16_t) -1, + }; - lldp->neighbor_by_id = hashmap_new(&lldp_neighbor_id_hash_ops); + lldp->neighbor_by_id = hashmap_new(&lldp_neighbor_hash_ops); if (!lldp->neighbor_by_id) return -ENOMEM; @@ -388,10 +386,8 @@ _public_ int sd_lldp_new(sd_lldp **ret) { return 0; } -static int neighbor_compare_func(const void *a, const void *b) { - const sd_lldp_neighbor * const*x = a, * const *y = b; - - return lldp_neighbor_id_hash_ops.compare(&(*x)->id, &(*y)->id); +static int neighbor_compare_func(sd_lldp_neighbor * const *a, sd_lldp_neighbor * const *b) { + return lldp_neighbor_id_compare_func(&(*a)->id, &(*b)->id); } static int on_timer_event(sd_event_source *s, uint64_t usec, void *userdata) { @@ -411,7 +407,6 @@ static int on_timer_event(sd_event_source *s, uint64_t usec, void *userdata) { static int lldp_start_timer(sd_lldp *lldp, sd_lldp_neighbor *neighbor) { sd_lldp_neighbor *n; - int r; assert(lldp); @@ -419,35 +414,17 @@ static int lldp_start_timer(sd_lldp *lldp, sd_lldp_neighbor *neighbor) { lldp_neighbor_start_ttl(neighbor); n = prioq_peek(lldp->neighbor_by_expiry); - if (!n) { - - if (lldp->timer_event_source) - return sd_event_source_set_enabled(lldp->timer_event_source, SD_EVENT_OFF); - - return 0; - } - - if (lldp->timer_event_source) { - r = sd_event_source_set_time(lldp->timer_event_source, n->until); - if (r < 0) - return r; - - return sd_event_source_set_enabled(lldp->timer_event_source, SD_EVENT_ONESHOT); - } + if (!n) + return event_source_disable(lldp->timer_event_source); if (!lldp->event) return 0; - r = sd_event_add_time(lldp->event, &lldp->timer_event_source, clock_boottime_or_monotonic(), n->until, 0, on_timer_event, lldp); - if (r < 0) - return r; - - r = sd_event_source_set_priority(lldp->timer_event_source, lldp->event_priority); - if (r < 0) - return r; - - (void) sd_event_source_set_description(lldp->timer_event_source, "lldp-timer"); - return 0; + return event_reset_time(lldp->event, &lldp->timer_event_source, + clock_boottime_or_monotonic(), + n->until, 0, + on_timer_event, lldp, + lldp->event_priority, "lldp-timer", true); } _public_ int sd_lldp_get_neighbors(sd_lldp *lldp, sd_lldp_neighbor ***ret) { @@ -479,7 +456,7 @@ _public_ int sd_lldp_get_neighbors(sd_lldp *lldp, sd_lldp_neighbor ***ret) { assert((size_t) k == hashmap_size(lldp->neighbor_by_id)); /* Return things in a stable order */ - qsort(l, k, sizeof(sd_lldp_neighbor*), neighbor_compare_func); + typesafe_qsort(l, k, neighbor_compare_func); *ret = l; return k; |