On 10/8/18 7:09 PM, Jerin Jacob wrote:
Introduced DEV_TX_OFFLOAD_OUTER_UDP_CKSUM offload flags and
PKT_TX_OUTER_UDP_CKSUM mbuf ol_flags to enable Tx outer UDP
checksum offload.
To use hardware Tx outer UDP checksum offload, the user needs to,
- enable following in mbuf:
a) fill outer_l2_len and outer_l3_len in mbuf
b) set the PKT_TX_OUTER_UDP_CKSUM flag
c) set the flag PKT_TX_OUTER_IPV4 or PKT_TX_OUTER_IPV6
- configure DEV_TX_OFFLOAD_OUTER_UDP_CKSUM offload flags in slow path
Signed-off-by: Jerin Jacob <jerin.ja...@caviumnetworks.com>
One question below
Reviewed-by: Andrew Rybchenko <arybche...@solarflare.com>
diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
index a453ec008..61e6fca4d 100644
--- a/lib/librte_mbuf/rte_mbuf.h
+++ b/lib/librte_mbuf/rte_mbuf.h
@@ -200,6 +200,9 @@ extern "C" {
/* add new TX flags here */
+/**< Outer UDP cksum of TX pkt. computed by NIC. */
Description for the block which includes PKT_TX_UDP_CKSUM has "the user
need to"...
IMHO, it would be very useful to have similar description here as well.
+#define PKT_TX_OUTER_UDP_CKSUM (1ULL << 41)
+
/**
* UDP Fragmentation Offload flag. This flag is used for enabling UDP
* fragmentation in SW or in HW. When use UFO, mbuf->tso_segsz is used
@@ -367,7 +370,8 @@ extern "C" {
PKT_TX_TUNNEL_MASK | \
PKT_TX_MACSEC | \
PKT_TX_SEC_OFFLOAD | \
- PKT_TX_UDP_SEG)
+ PKT_TX_UDP_SEG | \
+ PKT_TX_OUTER_UDP_CKSUM)
/**
* Mbuf having an external buffer attached. shinfo in mbuf must be filled.
