diff options
| author |   Sirshak Das <sirshak.das@arm.com> | 2018-10-03 22:53:51 +0000 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2018-10-19 07:10:47 +0000 |
| commit | 2f6d7bb93c157b874efb79a2d1583a4c368bf89a (patch) | |
| tree | 05dc2867c598cbb8d711f074b4b0eb62dd464f41 /src/vnet/gre | |
| parent | bf3443b0f852f5a4c551d12f926defbd047f2161 (diff) | |
vppinfra: add atomic macros for __sync builtins
This is first part of addition of atomic macros with only macros for
__sync builtins.
- Based on earlier patch by Damjan (https://gerrit.fd.io/r/#/c/10729/)
Additionally
- clib_atomic_release macro added and used in the absence
of any memory barrier.
- clib_atomic_bool_cmp_and_swap added
Change-Id: Ie4e48c1e184a652018d1d0d87c4be80ddd180a3b
Original-patch-by: Damjan Marion <damarion@cisco.com>
Signed-off-by: Sirshak Das <sirshak.das@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Ola Liljedahl <ola.liljedahl@arm.com>
Reviewed-by: Steve Capper <steve.capper@arm.com>
Diffstat (limited to 'src/vnet/gre')
| -rw-r--r-- | src/vnet/gre/gre.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/vnet/gre/gre.c b/src/vnet/gre/gre.c index e82befe7918..070c78e8984 100644 --- a/src/vnet/gre/gre.c +++ b/src/vnet/gre/gre.c @@ -406,7 +406,7 @@ gre_interface_tx (vlib_main_t * vm, /* Encap GRE seq# and ERSPAN type II header */ vlib_buffer_advance (b0, -sizeof (erspan_t2_t)); erspan_t2_t *h0 = vlib_buffer_get_current (b0); - u32 seq_num = clib_smp_atomic_add (>0->gre_sn->seq_num, 1); + u32 seq_num = clib_atomic_fetch_add (>0->gre_sn->seq_num, 1); u64 hdr = clib_host_to_net_u64 (ERSPAN_HDR2); h0->seq_num = clib_host_to_net_u32 (seq_num); h0->t2_u64 = hdr; @@ -418,7 +418,7 @@ gre_interface_tx (vlib_main_t * vm, /* Encap GRE seq# and ERSPAN type II header */ vlib_buffer_advance (b1, -sizeof (erspan_t2_t)); erspan_t2_t *h1 = vlib_buffer_get_current (b1); - u32 seq_num = clib_smp_atomic_add (>1->gre_sn->seq_num, 1); + u32 seq_num = clib_atomic_fetch_add (>1->gre_sn->seq_num, 1); u64 hdr = clib_host_to_net_u64 (ERSPAN_HDR2); h1->seq_num = clib_host_to_net_u32 (seq_num); h1->t2_u64 = hdr; @@ -473,7 +473,7 @@ gre_interface_tx (vlib_main_t * vm, /* Encap GRE seq# and ERSPAN type II header */ vlib_buffer_advance (b0, -sizeof (erspan_t2_t)); erspan_t2_t *h0 = vlib_buffer_get_current (b0); - u32 seq_num = clib_smp_atomic_add (>0->gre_sn->seq_num, 1); + u32 seq_num = clib_atomic_fetch_add (>0->gre_sn->seq_num, 1); u64 hdr = clib_host_to_net_u64 (ERSPAN_HDR2); h0->seq_num = clib_host_to_net_u32 (seq_num); h0->t2_u64 = hdr; |