From: Bill Fischofer <bill.fischo...@linaro.org> Drop support for the deprecated ODP_PKTIN_WAIT option on odp_pktin_recv_tmo() and odp_pktin_recv_mq_tmo()
Signed-off-by: Bill Fischofer <bill.fischo...@linaro.org> --- /** Email created from pull request 410 (Bill-Fischofer-Linaro:pktio-dropwait) ** https://github.com/Linaro/odp/pull/410 ** Patch: https://github.com/Linaro/odp/pull/410.patch ** Base sha: 44974a09b01c79adb9637a5dff38539598a76737 ** Merge commit sha: 50db898f5d832f31dfc63c6fc1360a29e700bdb4 **/ include/odp/api/abi-default/packet_io.h | 1 - platform/linux-generic/odp_packet_io.c | 76 +++++++++++++++-------------- platform/linux-generic/pktio/netmap.c | 6 +-- platform/linux-generic/pktio/pktio_common.c | 3 +- platform/linux-generic/pktio/socket.c | 6 +-- platform/linux-generic/pktio/socket_mmap.c | 6 +-- 6 files changed, 46 insertions(+), 52 deletions(-) diff --git a/include/odp/api/abi-default/packet_io.h b/include/odp/api/abi-default/packet_io.h index 4795f8fc3..7cd3edd75 100644 --- a/include/odp/api/abi-default/packet_io.h +++ b/include/odp/api/abi-default/packet_io.h @@ -46,7 +46,6 @@ typedef struct odp_pktout_queue_t { #define ODP_PKTIO_MACADDR_MAXSIZE 16 #define ODP_PKTIN_NO_WAIT 0 -#define ODP_PKTIN_WAIT UINT64_MAX /** * @} diff --git a/platform/linux-generic/odp_packet_io.c b/platform/linux-generic/odp_packet_io.c index 095f6be12..21236f799 100644 --- a/platform/linux-generic/odp_packet_io.c +++ b/platform/linux-generic/odp_packet_io.c @@ -40,6 +40,9 @@ * Must be power of two. */ #define SLEEP_CHECK 32 +/* Max wait time supported to avoid potential overflow */ +#define MAX_WAIT_TIME (UINT64_MAX / 1024) + static pktio_table_t *pktio_tbl; /* pktio pointer entries ( for inlines) */ @@ -1699,33 +1702,31 @@ int odp_pktin_recv_tmo(odp_pktin_queue_t queue, odp_packet_t packets[], int num, while (1) { ret = entry->s.ops->recv(entry, queue.index, packets, num); - if (ret != 0) + if (ret != 0 || wait == 0) return ret; - if (wait == 0) - return 0; - - if (wait != ODP_PKTIN_WAIT) { - /* Avoid unnecessary system calls. Record the start time - * only when needed and after the first call to recv. */ - if (odp_unlikely(!started)) { - odp_time_t t; - - t = odp_time_local_from_ns(wait * 1000); - started = 1; - t1 = odp_time_sum(odp_time_local(), t); - } + /* Avoid unnecessary system calls. Record the start time + * only when needed and after the first call to recv. */ + if (odp_unlikely(!started)) { + odp_time_t t; + + /* Avoid overflow issues for large wait times */ + if (wait > MAX_WAIT_TIME) + wait = MAX_WAIT_TIME; + t = odp_time_local_from_ns(wait * 1000); + started = 1; + t1 = odp_time_sum(odp_time_local(), t); + } - /* Check every SLEEP_CHECK rounds if total wait time - * has been exceeded. */ - if ((++sleep_round & (SLEEP_CHECK - 1)) == 0) { - t2 = odp_time_local(); + /* Check every SLEEP_CHECK rounds if total wait time + * has been exceeded. */ + if ((++sleep_round & (SLEEP_CHECK - 1)) == 0) { + t2 = odp_time_local(); - if (odp_time_cmp(t2, t1) > 0) - return 0; - } - wait = wait > SLEEP_USEC ? wait - SLEEP_USEC : 0; + if (odp_time_cmp(t2, t1) > 0) + return 0; } + wait = wait > SLEEP_USEC ? wait - SLEEP_USEC : 0; nanosleep(&ts, NULL); } @@ -1779,25 +1780,26 @@ int odp_pktin_recv_mq_tmo(const odp_pktin_queue_t queues[], unsigned num_q, if (wait == 0) return 0; - if (wait != ODP_PKTIN_WAIT) { - if (odp_unlikely(!started)) { - odp_time_t t; + if (odp_unlikely(!started)) { + odp_time_t t; - t = odp_time_local_from_ns(wait * 1000); - started = 1; - t1 = odp_time_sum(odp_time_local(), t); - } + /* Avoid overflow issues for large wait times */ + if (wait > MAX_WAIT_TIME) + wait = MAX_WAIT_TIME; + t = odp_time_local_from_ns(wait * 1000); + started = 1; + t1 = odp_time_sum(odp_time_local(), t); + } - /* Check every SLEEP_CHECK rounds if total wait time - * has been exceeded. */ - if ((++sleep_round & (SLEEP_CHECK - 1)) == 0) { - t2 = odp_time_local(); + /* Check every SLEEP_CHECK rounds if total wait time + * has been exceeded. */ + if ((++sleep_round & (SLEEP_CHECK - 1)) == 0) { + t2 = odp_time_local(); - if (odp_time_cmp(t2, t1) > 0) - return 0; - } - wait = wait > SLEEP_USEC ? wait - SLEEP_USEC : 0; + if (odp_time_cmp(t2, t1) > 0) + return 0; } + wait = wait > SLEEP_USEC ? wait - SLEEP_USEC : 0; nanosleep(&ts, NULL); } diff --git a/platform/linux-generic/pktio/netmap.c b/platform/linux-generic/pktio/netmap.c index 7200ceea8..bbd0d6cdf 100644 --- a/platform/linux-generic/pktio/netmap.c +++ b/platform/linux-generic/pktio/netmap.c @@ -834,8 +834,7 @@ static int netmap_recv_tmo(pktio_entry_t *pktio_entry, int index, FD_ZERO(&readfds); maxfd = netmap_fd_set(pktio_entry, index, &readfds); - if (select(maxfd + 1, &readfds, NULL, NULL, - usecs == ODP_PKTIN_WAIT ? NULL : &timeout) == 0) + if (select(maxfd + 1, &readfds, NULL, NULL, &timeout) == 0) return 0; return netmap_recv(pktio_entry, index, pkt_table, num); @@ -872,8 +871,7 @@ static int netmap_recv_mq_tmo(pktio_entry_t *pktio_entry[], int index[], timeout.tv_sec = usecs / (1000 * 1000); timeout.tv_usec = usecs - timeout.tv_sec * (1000ULL * 1000ULL); - if (select(maxfd + 1, &readfds, NULL, NULL, - usecs == ODP_PKTIN_WAIT ? NULL : &timeout) == 0) + if (select(maxfd + 1, &readfds, NULL, NULL, &timeout) == 0) return 0; for (i = 0; i < num_q; i++) { diff --git a/platform/linux-generic/pktio/pktio_common.c b/platform/linux-generic/pktio/pktio_common.c index f6fb4a73d..c7a1c3ab9 100644 --- a/platform/linux-generic/pktio/pktio_common.c +++ b/platform/linux-generic/pktio/pktio_common.c @@ -107,8 +107,7 @@ static int sock_recv_mq_tmo_select(pktio_entry_t * const *entry, timeout.tv_sec = usecs / (1000 * 1000); timeout.tv_usec = usecs - timeout.tv_sec * (1000ULL * 1000ULL); - if (select(maxfd + 1, readfds, NULL, NULL, - usecs == ODP_PKTIN_WAIT ? NULL : &timeout) == 0) + if (select(maxfd + 1, readfds, NULL, NULL, &timeout) == 0) return 0; for (i = 0; i < num_q; i++) { diff --git a/platform/linux-generic/pktio/socket.c b/platform/linux-generic/pktio/socket.c index 2d0296b8a..5abf05e34 100644 --- a/platform/linux-generic/pktio/socket.c +++ b/platform/linux-generic/pktio/socket.c @@ -726,8 +726,7 @@ static int sock_recv_tmo(pktio_entry_t *pktio_entry, int index, FD_ZERO(&readfds); maxfd = sock_fd_set(pktio_entry, index, &readfds); - if (select(maxfd + 1, &readfds, NULL, NULL, - usecs == ODP_PKTIN_WAIT ? NULL : &timeout) == 0) + if (select(maxfd + 1, &readfds, NULL, NULL, &timeout) == 0) return 0; return sock_mmsg_recv(pktio_entry, index, pkt_table, num); @@ -764,8 +763,7 @@ static int sock_recv_mq_tmo(pktio_entry_t *pktio_entry[], int index[], maxfd = maxfd2; } - if (select(maxfd + 1, &readfds, NULL, NULL, - usecs == ODP_PKTIN_WAIT ? NULL : &timeout) == 0) + if (select(maxfd + 1, &readfds, NULL, NULL, &timeout) == 0) return 0; for (i = 0; i < num_q; i++) { diff --git a/platform/linux-generic/pktio/socket_mmap.c b/platform/linux-generic/pktio/socket_mmap.c index f16670960..04c44bc85 100644 --- a/platform/linux-generic/pktio/socket_mmap.c +++ b/platform/linux-generic/pktio/socket_mmap.c @@ -692,8 +692,7 @@ static int sock_mmap_recv_tmo(pktio_entry_t *pktio_entry, int index, FD_ZERO(&readfds); maxfd = sock_mmap_fd_set(pktio_entry, index, &readfds); - if (select(maxfd + 1, &readfds, NULL, NULL, - usecs == ODP_PKTIN_WAIT ? NULL : &timeout) == 0) + if (select(maxfd + 1, &readfds, NULL, NULL, &timeout) == 0) return 0; return sock_mmap_recv(pktio_entry, index, pkt_table, num); @@ -730,8 +729,7 @@ static int sock_mmap_recv_mq_tmo(pktio_entry_t *pktio_entry[], int index[], timeout.tv_sec = usecs / (1000 * 1000); timeout.tv_usec = usecs - timeout.tv_sec * (1000ULL * 1000ULL); - if (select(maxfd + 1, &readfds, NULL, NULL, - usecs == ODP_PKTIN_WAIT ? NULL : &timeout) == 0) + if (select(maxfd + 1, &readfds, NULL, NULL, &timeout) == 0) return 0; for (i = 0; i < num_q; i++) {
