Commit 192b27ff authored by Gerrit Renker's avatar Gerrit Renker Committed by David S. Miller
Browse files

dccp: Integration of dynamic feature activation - part 2 (server side)



This patch integrates the activation of features at the end of negotiation
into the server-side code.

Note regarding the removal of 'const':
--------------------------------------
 The 'const' attribute has been removed from 'dreq' since dccp_activate_values()
 needs to operate on dreq's feature list. Part of the activation is to remove
 those options from the list that have already been confirmed, hence it is not
 purely read-only.

Signed-off-by: default avatarGerrit Renker <gerrit@erg.abdn.ac.uk>
Acked-by: default avatarIan McDonald <ian.mcdonald@jandi.co.nz>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6eb55d17
......@@ -111,7 +111,7 @@ struct sock *dccp_create_openreq_child(struct sock *sk,
struct sock *newsk = inet_csk_clone(sk, req, GFP_ATOMIC);
if (newsk != NULL) {
const struct dccp_request_sock *dreq = dccp_rsk(req);
struct dccp_request_sock *dreq = dccp_rsk(req);
struct inet_connection_sock *newicsk = inet_csk(newsk);
struct dccp_sock *newdp = dccp_sk(newsk);
struct dccp_minisock *newdmsk = dccp_msk(newsk);
......@@ -125,35 +125,6 @@ struct sock *dccp_create_openreq_child(struct sock *sk,
newicsk->icsk_rto = DCCP_TIMEOUT_INIT;
INIT_LIST_HEAD(&newdp->dccps_featneg);
if (dccp_feat_clone(sk, newsk))
goto out_free;
if (newdmsk->dccpms_send_ack_vector) {
newdp->dccps_hc_rx_ackvec =
dccp_ackvec_alloc(GFP_ATOMIC);
if (unlikely(newdp->dccps_hc_rx_ackvec == NULL))
goto out_free;
}
newdp->dccps_hc_rx_ccid =
ccid_hc_rx_new(newdmsk->dccpms_rx_ccid,
newsk, GFP_ATOMIC);
newdp->dccps_hc_tx_ccid =
ccid_hc_tx_new(newdmsk->dccpms_tx_ccid,
newsk, GFP_ATOMIC);
if (unlikely(newdp->dccps_hc_rx_ccid == NULL ||
newdp->dccps_hc_tx_ccid == NULL)) {
dccp_ackvec_free(newdp->dccps_hc_rx_ackvec);
ccid_hc_rx_delete(newdp->dccps_hc_rx_ccid, newsk);
ccid_hc_tx_delete(newdp->dccps_hc_tx_ccid, newsk);
out_free:
/* It is still raw copy of parent, so invalidate
* destructor and make plain sk_free() */
newsk->sk_destruct = NULL;
sk_free(newsk);
return NULL;
}
/*
* Step 3: Process LISTEN state
*
......@@ -184,6 +155,17 @@ out_free:
dccp_set_seqno(&newdp->dccps_awl,
max48(newdp->dccps_awl, newdp->dccps_iss));
/*
* Activate features after initialising the sequence numbers,
* since CCID initialisation may depend on GSS, ISR, ISS etc.
*/
if (dccp_feat_activate_values(newsk, &dreq->dreq_featneg)) {
/* It is still raw copy of parent, so invalidate
* destructor and make plain sk_free() */
newsk->sk_destruct = NULL;
sk_free(newsk);
return NULL;
}
dccp_init_xmit_timers(newsk);
DCCP_INC_STATS_BH(DCCP_MIB_PASSIVEOPENS);
......
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