IB/core: Initialize UD header structure with IP and UDP headers
ib_ud_header_init() is used to format InfiniBand headers
in a buffer up to (but not with) BTH. For RoCE UDP ENCAP it is
required that this function would be able to build also IP and UDP
headers.
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/include/rdma/ib_pack.h b/include/rdma/ib_pack.h
index e99d8f9..a193081 100644
--- a/include/rdma/ib_pack.h
+++ b/include/rdma/ib_pack.h
@@ -41,6 +41,8 @@
IB_ETH_BYTES = 14,
IB_VLAN_BYTES = 4,
IB_GRH_BYTES = 40,
+ IB_IP4_BYTES = 20,
+ IB_UDP_BYTES = 8,
IB_BTH_BYTES = 12,
IB_DETH_BYTES = 8
};
@@ -223,6 +225,27 @@
__be16 type;
};
+struct ib_unpacked_ip4 {
+ u8 ver;
+ u8 hdr_len;
+ u8 tos;
+ __be16 tot_len;
+ __be16 id;
+ __be16 frag_off;
+ u8 ttl;
+ u8 protocol;
+ __be16 check;
+ __be32 saddr;
+ __be32 daddr;
+};
+
+struct ib_unpacked_udp {
+ __be16 sport;
+ __be16 dport;
+ __be16 length;
+ __be16 csum;
+};
+
struct ib_unpacked_vlan {
__be16 tag;
__be16 type;
@@ -237,6 +260,10 @@
struct ib_unpacked_vlan vlan;
int grh_present;
struct ib_unpacked_grh grh;
+ int ipv4_present;
+ struct ib_unpacked_ip4 ip4;
+ int udp_present;
+ struct ib_unpacked_udp udp;
struct ib_unpacked_bth bth;
struct ib_unpacked_deth deth;
int immediate_present;
@@ -253,13 +280,17 @@
void *buf,
void *structure);
-void ib_ud_header_init(int payload_bytes,
- int lrh_present,
- int eth_present,
- int vlan_present,
- int grh_present,
- int immediate_present,
- struct ib_ud_header *header);
+__be16 ib_ud_ip4_csum(struct ib_ud_header *header);
+
+int ib_ud_header_init(int payload_bytes,
+ int lrh_present,
+ int eth_present,
+ int vlan_present,
+ int grh_present,
+ int ip_version,
+ int udp_present,
+ int immediate_present,
+ struct ib_ud_header *header);
int ib_ud_header_pack(struct ib_ud_header *header,
void *buf);