From: Maor Gottlieb <maorg@xxxxxxxxxxxx>
Some user space application would like to do RSS on the inner packet
fields instead of the outer. When user will set the IBV_RX_HASH_INNER
bit with one of the other hash fields, then the RSS will be on the inner
packet.
Signed-off-by: Maor Gottlieb <maorg@xxxxxxxxxxxx>
Reviewed-by: Yishai Hadas <yishaih@xxxxxxxxxxxx>
---
libibverbs/man/ibv_create_qp_ex.3 | 21 +++++++++++++++++++++
libibverbs/verbs.h | 7 ++++++-
2 files changed, 27 insertions(+), 1 deletion(-)
diff --git a/libibverbs/man/ibv_create_qp_ex.3 b/libibverbs/man/ibv_create_qp_ex.3
index 865b5fe..e7f8a49 100644
--- a/libibverbs/man/ibv_create_qp_ex.3
+++ b/libibverbs/man/ibv_create_qp_ex.3
@@ -72,6 +72,27 @@ uint64_t rx_hash_fields_mask; /* RX fields that should particip
.in -8
};
.fi
+
+.nf
+enum ibv_rx_hash_fields {
+.in +8
+IBV_RX_HASH_SRC_IPV4 = 1 << 0,
+IBV_RX_HASH_DST_IPV4 = 1 << 1,
+IBV_RX_HASH_SRC_IPV6 = 1 << 2,
+IBV_RX_HASH_DST_IPV6 = 1 << 3,
+IBV_RX_HASH_SRC_PORT_TCP = 1 << 4,
+IBV_RX_HASH_DST_PORT_TCP = 1 << 5,
+IBV_RX_HASH_SRC_PORT_UDP = 1 << 6,
+IBV_RX_HASH_DST_PORT_UDP = 1 << 7,
+.in -8
+};
+
+/* When set with one of the L3/L4 fields,
+ * then the RSS will be applied on the inner packet. */
+#define IBV_RX_HASH_INNER = (1ULL << 31)
+
+.fi
+
.PP
The function
.B ibv_create_qp_ex()
diff --git a/libibverbs/verbs.h b/libibverbs/verbs.h
index ce18b50..dcfe94e 100644
--- a/libibverbs/verbs.h
+++ b/libibverbs/verbs.h
@@ -241,9 +241,14 @@ enum ibv_rx_hash_fields {
IBV_RX_HASH_SRC_PORT_TCP = 1 << 4,
IBV_RX_HASH_DST_PORT_TCP = 1 << 5,
IBV_RX_HASH_SRC_PORT_UDP = 1 << 6,
- IBV_RX_HASH_DST_PORT_UDP = 1 << 7
+ IBV_RX_HASH_DST_PORT_UDP = 1 << 7,
};
+/* In some systems/compilers enum range might be limited
+ * to signed 4 bytes.
+ */
+#define IBV_RX_HASH_INNER (1ULL << 31)
+
struct ibv_rss_caps {
uint32_t supported_qpts;
uint32_t max_rwq_indirection_tables;
--
1.8.3.1
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
