27839f854a58 ubusd: make txq_len field signed
b35b2bc63e8e ubusd: treat EACCES on write like EAGAIN
713e9d19b2b6 ubusd: retry write on EINTR
8bb523ab20e0 ubusd: fix txq_len accounting
b1b783c74742 ubusd: add another tx attempt on enqueueing the first message for a client
5952b48e251c ubusd: do not call socket callback from ubus_msg_send
Signed-off-by: Felix Fietkau <nbd@nbd.name>
(cherry picked from commit 90cd8640bde750e014b6c02ed9ffb6f626753fc7)
(cherry picked from commit d9cd67b542e55841bda48871fd9a03391a40d1a2)
37233122a7