Hi Paul, On Tue, Feb 8, 2022 at 2:20 PM Paul Menzel <pmenzel@xxxxxxxxxxxxx> wrote: > > This reverts commit 81be03e026dc0c16dc1c64e088b2a53b73caa895. > > Since the commit, transferring files greater than some bytes to the > Nokia N9 (MeeGo) or Jolla (Sailfish OS) is not possible anymore. > > # obexctl > [NEW] Client /org/bluez/obex > [obex]# connect 40:98:4E:5B:CE:XX > Attempting to connect to 40:98:4E:5B:CE:XX > [NEW] Session /org/bluez/obex/client/session0 [default] > [NEW] ObjectPush /org/bluez/obex/client/session0 > Connection successful > [40:98:4E:5B:CE:XX]# send /lib/systemd/systemd > Attempting to send /lib/systemd/systemd to /org/bluez/obex/client/session0 > [NEW] Transfer /org/bluez/obex/client/session0/transfer0 > Transfer /org/bluez/obex/client/session0/transfer0 > Status: queued > Name: systemd > Size: 1841712 > Filename: /lib/systemd/systemd > Session: /org/bluez/obex/client/session0 > [CHG] Transfer /org/bluez/obex/client/session0/transfer0 Status: active > [CHG] Transfer /org/bluez/obex/client/session0/transfer0 Transferred: 32737 (@32KB/s 00:55) > [CHG] Transfer /org/bluez/obex/client/session0/transfer0 Status: error > [DEL] Transfer /org/bluez/obex/client/session0/transfer0 > > Reverting it, fixes the regression. > > Link: https://lore.kernel.org/linux-bluetooth/aa3ee7ac-6c52-3861-1798-3cc1a37f6ebf@xxxxxxxxxxxxx/T/#m1f9673e4ab0d55a7dccf87905337ab2e67d689f1 > Signed-off-by: Paul Menzel <pmenzel@xxxxxxxxxxxxx> We would be much better off with the explanation on why it is causing a regression on these, is there an error? On top of that we can avoid such regressions by introducing a test to rfcomm-tester to transfer big PDUs. > --- > net/bluetooth/rfcomm/core.c | 50 ++++++------------------------------- > net/bluetooth/rfcomm/sock.c | 46 ++++++++++++++++++++++++++-------- > 2 files changed, 43 insertions(+), 53 deletions(-) > > diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c > index 7324764384b6..f2bacb464ccf 100644 > --- a/net/bluetooth/rfcomm/core.c > +++ b/net/bluetooth/rfcomm/core.c > @@ -549,58 +549,22 @@ struct rfcomm_dlc *rfcomm_dlc_exists(bdaddr_t *src, bdaddr_t *dst, u8 channel) > return dlc; > } > > -static int rfcomm_dlc_send_frag(struct rfcomm_dlc *d, struct sk_buff *frag) > -{ > - int len = frag->len; > - > - BT_DBG("dlc %p mtu %d len %d", d, d->mtu, len); > - > - if (len > d->mtu) > - return -EINVAL; > - > - rfcomm_make_uih(frag, d->addr); > - __skb_queue_tail(&d->tx_queue, frag); > - > - return len; > -} > - > int rfcomm_dlc_send(struct rfcomm_dlc *d, struct sk_buff *skb) > { > - unsigned long flags; > - struct sk_buff *frag, *next; > - int len; > + int len = skb->len; > > if (d->state != BT_CONNECTED) > return -ENOTCONN; > > - frag = skb_shinfo(skb)->frag_list; > - skb_shinfo(skb)->frag_list = NULL; > - > - /* Queue all fragments atomically. */ > - spin_lock_irqsave(&d->tx_queue.lock, flags); > - > - len = rfcomm_dlc_send_frag(d, skb); > - if (len < 0 || !frag) > - goto unlock; > - > - for (; frag; frag = next) { > - int ret; > - > - next = frag->next; > - > - ret = rfcomm_dlc_send_frag(d, frag); > - if (ret < 0) { > - kfree_skb(frag); > - goto unlock; > - } > + BT_DBG("dlc %p mtu %d len %d", d, d->mtu, len); > > - len += ret; > - } > + if (len > d->mtu) > + return -EINVAL; > > -unlock: > - spin_unlock_irqrestore(&d->tx_queue.lock, flags); > + rfcomm_make_uih(skb, d->addr); > + skb_queue_tail(&d->tx_queue, skb); > > - if (len > 0 && !test_bit(RFCOMM_TX_THROTTLED, &d->flags)) > + if (!test_bit(RFCOMM_TX_THROTTLED, &d->flags)) > rfcomm_schedule(); > return len; > } > diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c > index 5938af3e9936..2c95bb58f901 100644 > --- a/net/bluetooth/rfcomm/sock.c > +++ b/net/bluetooth/rfcomm/sock.c > @@ -575,20 +575,46 @@ static int rfcomm_sock_sendmsg(struct socket *sock, struct msghdr *msg, > lock_sock(sk); > > sent = bt_sock_wait_ready(sk, msg->msg_flags); > + if (sent) > + goto done; > > - release_sock(sk); > + while (len) { > + size_t size = min_t(size_t, len, d->mtu); > + int err; > > - if (sent) > - return sent; > + skb = sock_alloc_send_skb(sk, size + RFCOMM_SKB_RESERVE, > + msg->msg_flags & MSG_DONTWAIT, &err); > + if (!skb) { > + if (sent == 0) > + sent = err; > + break; > + } > + skb_reserve(skb, RFCOMM_SKB_HEAD_RESERVE); > + > + err = memcpy_from_msg(skb_put(skb, size), msg, size); > + if (err) { > + kfree_skb(skb); > + if (sent == 0) > + sent = err; > + break; > + } > + > + skb->priority = sk->sk_priority; > + > + err = rfcomm_dlc_send(d, skb); > + if (err < 0) { > + kfree_skb(skb); > + if (sent == 0) > + sent = err; > + break; > + } > > - skb = bt_skb_sendmmsg(sk, msg, len, d->mtu, RFCOMM_SKB_HEAD_RESERVE, > - RFCOMM_SKB_TAIL_RESERVE); > - if (IS_ERR_OR_NULL(skb)) > - return PTR_ERR(skb); > + sent += size; > + len -= size; > + } > > - sent = rfcomm_dlc_send(d, skb); > - if (sent < 0) > - kfree_skb(skb); > +done: > + release_sock(sk); > > return sent; > } > -- > 2.34.1 > -- Luiz Augusto von Dentz
