SG: Change sg_set_page() to take length and offset argument
Most drivers need to set length and offset as well, so may as well fold
those three lines into one.
Add sg_assign_page() for those two locations that only needed to set
the page, where the offset/length is set outside of the function context.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/net/sctp/auth.c b/net/sctp/auth.c
index cbd64b2..621113a 100644
--- a/net/sctp/auth.c
+++ b/net/sctp/auth.c
@@ -727,9 +727,7 @@
/* set up scatter list */
end = skb_tail_pointer(skb);
sg_init_table(&sg, 1);
- sg_set_page(&sg, virt_to_page(auth));
- sg.offset = (unsigned long)(auth) % PAGE_SIZE;
- sg.length = end - (unsigned char *)auth;
+ sg_set_buf(&sg, auth, end - (unsigned char *)auth);
desc.tfm = asoc->ep->auth_hmacs[hmac_id];
desc.flags = 0;
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 658476c..c055212 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -1514,9 +1514,7 @@
/* Sign the message. */
sg_init_table(&sg, 1);
- sg_set_page(&sg, virt_to_page(&cookie->c));
- sg.offset = (unsigned long)(&cookie->c) % PAGE_SIZE;
- sg.length = bodysize;
+ sg_set_buf(&sg, &cookie->c, bodysize);
keylen = SCTP_SECRET_SIZE;
key = (char *)ep->secret_key[ep->current_key];
desc.tfm = sctp_sk(ep->base.sk)->hmac;
@@ -1587,9 +1585,7 @@
/* Check the signature. */
keylen = SCTP_SECRET_SIZE;
sg_init_table(&sg, 1);
- sg_set_page(&sg, virt_to_page(bear_cookie));
- sg.offset = (unsigned long)(bear_cookie) % PAGE_SIZE;
- sg.length = bodysize;
+ sg_set_buf(&sg, bear_cookie, bodysize);
key = (char *)ep->secret_key[ep->current_key];
desc.tfm = sctp_sk(ep->base.sk)->hmac;
desc.flags = 0;