forked from acouzens/open5gs
109 lines
2.7 KiB
C
109 lines
2.7 KiB
C
#define TRACE_MODULE _gtp_path
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#include "core_debug.h"
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#include "core_pkbuf.h"
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#include "core_net.h"
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#include "3gpp_defs.h"
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#include "gtp_path.h"
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status_t gtp_open(gtp_node_t *gnode, net_sock_handler handler)
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{
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char buf[INET_ADDRSTRLEN];
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int rc;
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d_assert(gnode, return CORE_ERROR, "Null param");
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rc = net_listen_with_addr(&gnode->s, SOCK_DGRAM, IPPROTO_UDP,
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gnode->local_port, gnode->local_addr);
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if (rc != 0)
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{
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d_error("Can't establish GTP[%s:%d] path(%d:%s)",
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INET_NTOP(&gnode->local_addr, buf), gnode->local_port,
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errno, strerror(errno));
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return CORE_ERROR;
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}
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rc = net_register_sock(gnode->s, handler, gnode);
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if (rc != 0)
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{
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d_error("Can't establish GTP path(%d:%s)",
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errno, strerror(errno));
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net_close(gnode->s);
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return CORE_ERROR;
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}
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d_trace(1, "gtp_listen() %s:%d\n",
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INET_NTOP(&gnode->local_addr, buf), gnode->local_port);
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return CORE_OK;
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}
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status_t gtp_close(gtp_node_t *gnode)
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{
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d_assert(gnode, return CORE_ERROR, "Null param");
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d_assert(gnode->s, return CORE_ERROR, "Null param");
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net_unregister_sock(gnode->s);
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net_close(gnode->s);
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return CORE_OK;
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}
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pkbuf_t *gtp_read(gtp_node_t *gnode)
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{
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pkbuf_t *pkb;
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int r;
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d_assert(gnode, return NULL, "Null param");
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d_assert(gnode->s, return NULL, "Null param");
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pkb = pkbuf_alloc(0, MAX_SDU_LEN);
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d_assert(pkb, return NULL, "Can't allocate pkbuf");
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r = net_read(gnode->s, pkb->payload, pkb->len, 0);
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if (r <= 0)
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{
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pkbuf_free(pkb);
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if (gnode->s->sndrcv_errno != EAGAIN)
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{
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d_warn("net_read failed(%d:%s)",
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gnode->s->sndrcv_errno, strerror(gnode->s->sndrcv_errno));
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}
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return NULL;
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}
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else
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{
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pkb->len = r;
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return pkb;
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}
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}
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status_t gtp_send(gtp_node_t *gnode, pkbuf_t *pkbuf)
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{
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char buf[INET_ADDRSTRLEN];
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ssize_t sent;
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d_assert(gnode, return CORE_ERROR, "Null param");
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d_assert(gnode->s, return CORE_ERROR, "Null param");
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d_assert(pkbuf, return CORE_ERROR, "Null param");
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sent = net_sendto(gnode->s, pkbuf->payload, pkbuf->len,
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gnode->remote_addr, gnode->remote_port);
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d_trace(1,"Sent %d->%d bytes to [%s:%d]\n", pkbuf->len, sent,
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INET_NTOP(&gnode->remote_addr, buf), gnode->remote_port);
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d_trace_hex(1, pkbuf->payload, pkbuf->len);
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if (sent < 0 || sent != pkbuf->len)
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{
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d_error("net_send error (%d:%s)",
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gnode->s->sndrcv_errno, strerror(gnode->s->sndrcv_errno));
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return CORE_ERROR;
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}
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pkbuf_free(pkbuf);
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return CORE_OK;
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}
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