NFC: llcp: Use socket specific link parameters before the local ones

If the socket link options are set, use them before the local one.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

diff --git a/net/nfc/llcp/commands.c b/net/nfc/llcp/commands.c
index c8a2096..5f61830 100644 (file)
--- a/net/nfc/llcp/commands.c
+++ b/net/nfc/llcp/commands.c
@@ -319,9 +319,9 @@ int nfc_llcp_send_connect(struct nfc_llcp_sock *sock)
        struct sk_buff *skb;
        u8 *service_name_tlv = NULL, service_name_tlv_length;
        u8 *miux_tlv = NULL, miux_tlv_length;
-       u8 *rw_tlv = NULL, rw_tlv_length;
+       u8 *rw_tlv = NULL, rw_tlv_length, rw;
        int err;
-       u16 size = 0;
+       u16 size = 0, miux;
 
        pr_debug("Sending CONNECT\n");
 
@@ -337,11 +337,15 @@ int nfc_llcp_send_connect(struct nfc_llcp_sock *sock)
                size += service_name_tlv_length;
        }
 
-       miux_tlv = nfc_llcp_build_tlv(LLCP_TLV_MIUX, (u8 *)&local->miux, 0,
+       /* If the socket parameters are not set, use the local ones */
+       miux = sock->miux > LLCP_MAX_MIUX ? local->miux : sock->miux;
+       rw = sock->rw > LLCP_MAX_RW ? local->rw : sock->rw;
+
+       miux_tlv = nfc_llcp_build_tlv(LLCP_TLV_MIUX, (u8 *)&miux, 0,
                                      &miux_tlv_length);
        size += miux_tlv_length;
 
-       rw_tlv = nfc_llcp_build_tlv(LLCP_TLV_RW, &local->rw, 0, &rw_tlv_length);
+       rw_tlv = nfc_llcp_build_tlv(LLCP_TLV_RW, &rw, 0, &rw_tlv_length);
        size += rw_tlv_length;
 
        pr_debug("SKB size %d SN length %zu\n", size, sock->service_name_len);
@@ -378,9 +382,9 @@ int nfc_llcp_send_cc(struct nfc_llcp_sock *sock)
        struct nfc_llcp_local *local;
        struct sk_buff *skb;
        u8 *miux_tlv = NULL, miux_tlv_length;
-       u8 *rw_tlv = NULL, rw_tlv_length;
+       u8 *rw_tlv = NULL, rw_tlv_length, rw;
        int err;
-       u16 size = 0;
+       u16 size = 0, miux;
 
        pr_debug("Sending CC\n");
 
@@ -388,11 +392,15 @@ int nfc_llcp_send_cc(struct nfc_llcp_sock *sock)
        if (local == NULL)
                return -ENODEV;
 
-       miux_tlv = nfc_llcp_build_tlv(LLCP_TLV_MIUX, (u8 *)&local->miux, 0,
+       /* If the socket parameters are not set, use the local ones */
+       miux = sock->miux > LLCP_MAX_MIUX ? local->miux : sock->miux;
+       rw = sock->rw > LLCP_MAX_RW ? local->rw : sock->rw;
+
+       miux_tlv = nfc_llcp_build_tlv(LLCP_TLV_MIUX, (u8 *)&miux, 0,
                                      &miux_tlv_length);
        size += miux_tlv_length;
 
-       rw_tlv = nfc_llcp_build_tlv(LLCP_TLV_RW, &local->rw, 0, &rw_tlv_length);
+       rw_tlv = nfc_llcp_build_tlv(LLCP_TLV_RW, &rw, 0, &rw_tlv_length);
        size += rw_tlv_length;
 
        skb = llcp_allocate_pdu(sock, LLCP_PDU_CC, size);

diff --git a/net/nfc/llcp/llcp.c b/net/nfc/llcp/llcp.c
index c0048b2..8d547ae 100644 (file)
--- a/net/nfc/llcp/llcp.c
+++ b/net/nfc/llcp/llcp.c
@@ -865,6 +865,8 @@ static void nfc_llcp_recv_connect(struct nfc_llcp_local *local,
        new_sock = nfc_llcp_sock(new_sk);
        new_sock->dev = local->dev;
        new_sock->local = nfc_llcp_local_get(local);
+       new_sock->rw = sock->rw;
+       new_sock->miux = sock->miux;
        new_sock->remote_miu = local->remote_miu;
        new_sock->nfc_protocol = sock->nfc_protocol;
        new_sock->dsap = ssap;

diff --git a/net/nfc/llcp/sock.c b/net/nfc/llcp/sock.c
index 9357a75..827d7d7 100644 (file)
--- a/net/nfc/llcp/sock.c
+++ b/net/nfc/llcp/sock.c
@@ -290,6 +290,9 @@ static int nfc_llcp_setsockopt(struct socket *sock, int level, int optname,
 
        release_sock(sk);
 
+       pr_debug("%p rw %d miux %d\n", llcp_sock,
+                llcp_sock->rw, llcp_sock->miux);
+
        return err;
 }
 
@@ -915,6 +918,8 @@ struct sock *nfc_llcp_sock_alloc(struct socket *sock, int type, gfp_t gfp)
 
        llcp_sock->ssap = 0;
        llcp_sock->dsap = LLCP_SAP_SDP;
+       llcp_sock->rw = LLCP_MAX_RW + 1;
+       llcp_sock->miux = LLCP_MAX_MIUX + 1;
        llcp_sock->remote_rw = LLCP_DEFAULT_RW;
        llcp_sock->remote_miu = LLCP_DEFAULT_MIU;
        llcp_sock->send_n = llcp_sock->send_ack_n = 0;