[PATCH v3 09/18] tcp, udp: Use named field initializers in iov_init functions

Both the TCP and UDP iov_init functions have some large structure literals
defined in "field order" style.  These are pretty hard to read since it's
not obvious what value corresponds to what field.  Use named field style
initializers instead to make this clearer.

Signed-off-by: David Gibson <david(a)gibson.dropbear.id.au>
---
 tcp.c | 26 ++++++++++++--------------
 udp.c | 13 ++++---------
 2 files changed, 16 insertions(+), 23 deletions(-)

diff --git a/tcp.c b/tcp.c
index 0c46a7e..79fc733 100644
--- a/tcp.c
+++ b/tcp.c
@@ -1058,18 +1058,17 @@ static void tcp_sock4_iov_init(void)
 	int i;
 
 	for (i = 0; i < ARRAY_SIZE(tcp4_l2_buf); i++) {
-		tcp4_l2_buf[i] = (struct tcp4_l2_buf_t) { 0, 0,
-			{ 0 },
-			0, L2_BUF_ETH_IP4_INIT, L2_BUF_IP4_INIT(IPPROTO_TCP),
-			{ .doff = sizeof(struct tcphdr) / 4, .ack = 1 }, { 0 },
+		tcp4_l2_buf[i] = (struct tcp4_l2_buf_t) {
+			.eh = L2_BUF_ETH_IP4_INIT,
+			.iph = L2_BUF_IP4_INIT(IPPROTO_TCP),
+			.th = { .doff = sizeof(struct tcphdr) / 4, .ack = 1 }
 		};
 	}
 
 	for (i = 0; i < ARRAY_SIZE(tcp4_l2_flags_buf); i++) {
-		tcp4_l2_flags_buf[i] = (struct tcp4_l2_flags_buf_t) { 0, 0,
-			{ 0 },
-			0, L2_BUF_ETH_IP4_INIT, L2_BUF_IP4_INIT(IPPROTO_TCP),
-			{ 0 }, { 0 },
+		tcp4_l2_flags_buf[i] = (struct tcp4_l2_flags_buf_t) {
+			.eh = L2_BUF_ETH_IP4_INIT,
+			.iph = L2_BUF_IP4_INIT(IPPROTO_TCP)
 		};
 	}
 
@@ -1092,17 +1091,16 @@ static void tcp_sock6_iov_init(void)
 
 	for (i = 0; i < ARRAY_SIZE(tcp6_l2_buf); i++) {
 		tcp6_l2_buf[i] = (struct tcp6_l2_buf_t) {
-			{ 0 },
-			0, L2_BUF_ETH_IP6_INIT, L2_BUF_IP6_INIT(IPPROTO_TCP),
-			{ .doff = sizeof(struct tcphdr) / 4, .ack = 1 }, { 0 },
+			.eh = L2_BUF_ETH_IP6_INIT,
+			.ip6h = L2_BUF_IP6_INIT(IPPROTO_TCP),
+			.th = { .doff = sizeof(struct tcphdr) / 4, .ack = 1 }
 		};
 	}
 
 	for (i = 0; i < ARRAY_SIZE(tcp6_l2_flags_buf); i++) {
 		tcp6_l2_flags_buf[i] = (struct tcp6_l2_flags_buf_t) {
-			{ 0 },
-			0, L2_BUF_ETH_IP6_INIT, L2_BUF_IP6_INIT(IPPROTO_TCP),
-			{ 0 }, { 0 },
+			.eh = L2_BUF_ETH_IP6_INIT,
+			.ip6h = L2_BUF_IP6_INIT(IPPROTO_TCP)
 		};
 	}
 
diff --git a/udp.c b/udp.c
index dbfdb61..fb3f790 100644
--- a/udp.c
+++ b/udp.c
@@ -329,9 +329,8 @@ static void udp_sock4_iov_init(const struct ctx *c)
 
 	for (i = 0; i < ARRAY_SIZE(udp4_l2_buf); i++) {
 		udp4_l2_buf[i] = (struct udp4_l2_buf_t) {
-			{ 0 }, 0, 0,
-			L2_BUF_ETH_IP4_INIT, L2_BUF_IP4_INIT(IPPROTO_UDP),
-			{{{ 0 }}}, { 0 },
+			.eh = L2_BUF_ETH_IP4_INIT,
+			.iph = L2_BUF_IP4_INIT(IPPROTO_UDP)
 		};
 	}
 
@@ -371,12 +370,8 @@ static void udp_sock6_iov_init(const struct ctx *c)
 
 	for (i = 0; i < ARRAY_SIZE(udp6_l2_buf); i++) {
 		udp6_l2_buf[i] = (struct udp6_l2_buf_t) {
-			{ 0 },
-#ifdef __AVX2__
-			{ 0 },
-#endif
-			0, L2_BUF_ETH_IP6_INIT, L2_BUF_IP6_INIT(IPPROTO_UDP),
-			{{{ 0 }}}, { 0 },
+			.eh = L2_BUF_ETH_IP6_INIT,
+			.ip6h = L2_BUF_IP6_INIT(IPPROTO_UDP)
 		};
 	}
 
-- 
2.39.0