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authorEzequiel Garcia <ezequiel.garcia@free-electrons.com>2014-05-19 13:59:52 -0300
committerDavid S. Miller <davem@davemloft.net>2014-05-22 14:57:15 -0400
commite876f208af18b074f800656e4d1b99da75b2135f (patch)
treedaff9963d9fe03343b9dcac38d0dec07881d1db7 /include/net
parent8af750d739620a0028dc767b289b0ed1d61fb38b (diff)
net: Add a software TSO helper API
Although the implementation probably needs a lot of work, this initial API allows to implement software TSO in mvneta and mv643xx_eth drivers in a not so intrusive way. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/tso.h20
1 files changed, 20 insertions, 0 deletions
diff --git a/include/net/tso.h b/include/net/tso.h
new file mode 100644
index 000000000000..47e5444f7d15
--- /dev/null
+++ b/include/net/tso.h
@@ -0,0 +1,20 @@
+#ifndef _TSO_H
+#define _TSO_H
+
+#include <net/ip.h>
+
+struct tso_t {
+ int next_frag_idx;
+ void *data;
+ size_t size;
+ u16 ip_id;
+ u32 tcp_seq;
+};
+
+int tso_count_descs(struct sk_buff *skb);
+void tso_build_hdr(struct sk_buff *skb, char *hdr, struct tso_t *tso,
+ int size, bool is_last);
+void tso_build_data(struct sk_buff *skb, struct tso_t *tso, int size);
+void tso_start(struct sk_buff *skb, struct tso_t *tso);
+
+#endif /* _TSO_H */